diff --git a/src/main/java/DialogBox.java b/src/main/java/DialogBox.java
new file mode 100644
index 0000000000..1fc8b12c39
--- /dev/null
+++ b/src/main/java/DialogBox.java
@@ -0,0 +1,61 @@
+package duke; 
+
+import java.io.IOException;
+import java.util.Collections;
+
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.geometry.Pos;
+import javafx.scene.Node;
+import javafx.scene.control.Label;
+import javafx.scene.image.Image;
+import javafx.scene.image.ImageView;
+import javafx.scene.layout.HBox;
+
+/**
+ * An example of a custom control using FXML.
+ * This control represents a dialog box consisting of an ImageView to represent the speaker's face and a label
+ * containing text from the speaker.
+ */
+public class DialogBox extends HBox {
+    @FXML
+    private Label dialog;
+    @FXML
+    private ImageView displayPicture;
+
+    private DialogBox(String text, Image img) {
+        try {
+            FXMLLoader fxmlLoader = new FXMLLoader(MainWindow.class.getResource("/view/DialogBox.fxml"));
+            fxmlLoader.setController(this);
+            fxmlLoader.setRoot(this);
+            fxmlLoader.load();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        dialog.setText(text);
+        displayPicture.setImage(img);
+    }
+
+    /**
+     * Flips the dialog box such that the ImageView is on the left and text on the right.
+     */
+    private void flip() {
+        ObservableList<Node> tmp = FXCollections.observableArrayList(this.getChildren());
+        Collections.reverse(tmp);
+        getChildren().setAll(tmp);
+        setAlignment(Pos.TOP_LEFT);
+    }
+
+    public static DialogBox getUserDialog(String text, Image img) {
+        return new DialogBox(text, img);
+    }
+
+    public static DialogBox getDukeDialog(String text, Image img) {
+        var db = new DialogBox(text, img);
+        db.flip();
+        return db;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/Duke.java b/src/main/java/Duke.java
index ed7e4c6078..d4e7c4786f 100644
--- a/src/main/java/Duke.java
+++ b/src/main/java/Duke.java
@@ -1,23 +1,88 @@
 package duke;
 
+import duke.exception.DukeException;
+import duke.util.Parser;
+import duke.util.Ui;
+import duke.util.Storage;
+import duke.task.TaskList;
+import duke.command.Command;
+
 /**
  * Application class for Duke.
  */
 public class Duke {
+    private Storage storage;
+    private TaskList tasks;
+    private Ui ui;
+
+    public Duke() {
+        this("data/duke.txt");
+    }
+
+    /**
+     * Constructor of Duke class.
+     * 
+     * @param filePath Path to text file where save data is stored.
+     */
+    public Duke(String filePath) {
+        this.ui = new Ui();
+        this.storage = new Storage(filePath);
+        try {
+            this.tasks = this.storage.load();
+        } catch (DukeException e) {
+            this.ui.showLoadingError();
+            this.tasks = new TaskList();
+        }
+    }
+
     /**
      * Main method for Duke.
      * 
      * @param args Arguments entered when main method is executed.
      */
     public static void main(String[] args) {
+        Duke duke = new Duke("data/duke.txt");
+        duke.run();
+    }
+
+    public String getResponse(String input) {
+        return this.step(input);
+    }
+
+    /**
+     * Run method of Duke.
+     */
+    public void run() {
         String logo = " ____        _        \n"
                 + "|  _ \\ _   _| | _____ \n"
                 + "| | | | | | | |/ / _ \\\n"
                 + "| |_| | |_| |   <  __/\n"
                 + "|____/ \\__,_|_|\\_\\___|\n";
         System.out.println("Hello from\n" + logo);
+        this.ui.showWelcome();
+
+        boolean isExit = false;
+        while (!isExit) {
+            try {
+                String fullCommand = ui.readCommand();
+                Command c = Parser.parse(fullCommand);
+                c.execute(tasks, ui, storage);
+                storage.save(tasks);
+                isExit = c.isExit();
+            } catch (DukeException e) {
+                ui.showError(e.getMessage());
+            }
+        }
+    }
 
-        Main main = new Main("../../../data/duke.txt");
-        main.run();
+    public String step(String input) {
+        try {
+            Command c = Parser.parse(input);
+            c.execute(tasks, ui, storage);
+            this.storage.save(tasks);
+        } catch(DukeException e) {
+            this.ui.showError(e.getMessage());
+        }
+        return this.ui.getOutput();
     }
 }
diff --git a/src/main/java/DukeLogic.java b/src/main/java/DukeLogic.java
new file mode 100644
index 0000000000..aeaab83624
--- /dev/null
+++ b/src/main/java/DukeLogic.java
@@ -0,0 +1,67 @@
+package duke;
+
+import duke.exception.DukeException;
+import duke.util.Parser;
+import duke.util.Ui;
+import duke.util.Storage;
+import duke.task.TaskList;
+import duke.command.Command;
+
+public class DukeLogic {
+    private Storage storage;
+    private TaskList tasks;
+    private Ui ui;
+
+    /**
+     * Constructor of Duke class.
+     * 
+     * @param filePath Path to text file where save data is stored.
+     */
+    public DukeLogic(String filePath) {
+        this.ui = new Ui();
+        this.storage = new Storage(filePath);
+        try {
+            this.tasks = this.storage.load();
+        } catch (DukeException e) {
+            this.ui.showLoadingError();
+            this.tasks = new TaskList();
+        }
+    }
+
+    /**
+     * Run method of Duke.
+     */
+    public void run() {
+        String logo = " ____        _        \n"
+                + "|  _ \\ _   _| | _____ \n"
+                + "| | | | | | | |/ / _ \\\n"
+                + "| |_| | |_| |   <  __/\n"
+                + "|____/ \\__,_|_|\\_\\___|\n";
+        System.out.println("Hello from\n" + logo);
+        this.ui.showWelcome();
+
+        boolean isExit = false;
+        while (!isExit) {
+            try {
+                String fullCommand = ui.readCommand();
+                Command c = Parser.parse(fullCommand);
+                c.execute(tasks, ui, storage);
+                storage.save(tasks);
+                isExit = c.isExit();
+            } catch (DukeException e) {
+                ui.showError(e.getMessage());
+            }
+        }
+    }
+
+    public String step(String input) {
+        try {
+            Command c = Parser.parse(input);
+            c.execute(tasks, ui, storage);
+            this.storage.save(tasks);
+        } catch(DukeException e) {
+            ui.showError(e.getMessage());
+        }
+        return this.ui.getOutput();
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/Launcher.java b/src/main/java/Launcher.java
new file mode 100644
index 0000000000..5483e63637
--- /dev/null
+++ b/src/main/java/Launcher.java
@@ -0,0 +1,12 @@
+package duke;
+
+import javafx.application.Application;
+
+/**
+ * A launcher class to workaround classpath issues.
+ */
+public class Launcher {
+    public static void main(String[] args) {
+        Application.launch(Main.class, args);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index d99167a517..8ed3a0e35d 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -1,59 +1,32 @@
 package duke;
 
-import duke.DukeException;
-import duke.Parser;
-import duke.Ui;
-import duke.Storage;
-import duke.TaskList;
-import duke.command.Command;
-import java.util.Scanner;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-import java.util.ArrayList;
+import java.io.IOException;
+
+import duke.MainWindow;
+import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Scene;
+import javafx.scene.layout.AnchorPane;
+import javafx.stage.Stage;
 
 /**
- * Main class of Duke.
- * Contains run() method.
+ * A GUI for Duke using FXML.
  */
-public class Main {
-    private Storage storage;
-    private TaskList tasks;
-    private Ui ui;
-
-    /**
-     * Constructor of Main class.
-     * 
-     * @param filePath Path to text file where save data is stored.
-     */
-    public Main(String filePath) {
-        ui = new Ui();
-        storage = new Storage(filePath);
-        try {
-            tasks = storage.load();
-        } catch (DukeException e) {
-            ui.showLoadingError();
-            tasks = new TaskList();
-        }
-    }
+public class Main extends Application {
 
-    /**
-     * Run method of Duke.
-     */
-    public void run() {
-        this.ui.showWelcome();
+    private Duke duke = new Duke();
 
-        boolean isExit = false;
-        while (!isExit) {
-            try {
-                String fullCommand = ui.readCommand();
-                Command c = Parser.parse(fullCommand);
-                c.execute(tasks, ui, storage);
-                isExit = c.isExit();
-            } catch (DukeException e) {
-                ui.showError(e.getMessage());
-            }
+    @Override
+    public void start(Stage stage) {
+        try {
+            FXMLLoader fxmlLoader = new FXMLLoader(Main.class.getResource("/view/MainWindow.fxml"));
+            AnchorPane ap = fxmlLoader.load();
+            Scene scene = new Scene(ap);
+            stage.setScene(scene);
+            fxmlLoader.<MainWindow>getController().setDuke(duke);
+            stage.show();
+        } catch (IOException e) {
+            e.printStackTrace();
         }
     }
 }
\ No newline at end of file
diff --git a/src/main/java/MainWindow.java b/src/main/java/MainWindow.java
new file mode 100644
index 0000000000..94f610adc5
--- /dev/null
+++ b/src/main/java/MainWindow.java
@@ -0,0 +1,51 @@
+package duke;
+
+import javafx.fxml.FXML;
+import javafx.scene.control.Button;
+import javafx.scene.control.ScrollPane;
+import javafx.scene.control.TextField;
+import javafx.scene.image.Image;
+import javafx.scene.layout.AnchorPane;
+import javafx.scene.layout.VBox;
+/**
+ * Controller for MainWindow. Provides the layout for the other controls.
+ */
+public class MainWindow extends AnchorPane {
+    @FXML
+    private ScrollPane scrollPane;
+    @FXML
+    private VBox dialogContainer;
+    @FXML
+    private TextField userInput;
+    @FXML
+    private Button sendButton;
+
+    private Duke duke;
+
+    private Image userImage = new Image(this.getClass().getResourceAsStream("/resources/DaUser.png"));
+    private Image dukeImage = new Image(this.getClass().getResourceAsStream("/resources/DaDuke.png"));
+
+    @FXML
+    public void initialize() {
+        scrollPane.vvalueProperty().bind(dialogContainer.heightProperty());
+    }
+
+    public void setDuke(Duke d) {
+        duke = d;
+    }
+
+    /**
+     * Creates two dialog boxes, one echoing user input and the other containing Duke's reply and then appends them to
+     * the dialog container. Clears the user input after processing.
+     */
+    @FXML
+    private void handleUserInput() {
+        String input = userInput.getText();
+        String response = duke.getResponse(input);
+        dialogContainer.getChildren().addAll(
+                DialogBox.getUserDialog(input, userImage),
+                DialogBox.getDukeDialog(response, dukeImage)
+        );
+        userInput.clear();
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/AddCommand.java b/src/main/java/command/AddCommand.java
similarity index 91%
rename from src/main/java/AddCommand.java
rename to src/main/java/command/AddCommand.java
index 007a56f8f1..91533794a3 100644
--- a/src/main/java/AddCommand.java
+++ b/src/main/java/command/AddCommand.java
@@ -1,10 +1,10 @@
 package duke.command;
 
-import duke.DukeException;
-import duke.Parser;
-import duke.Ui;
-import duke.Storage;
-import duke.TaskList;
+import duke.exception.DukeException;
+import duke.util.Parser;
+import duke.util.Ui;
+import duke.util.Storage;
+import duke.task.TaskList;
 import duke.task.Task;
 
 /**
diff --git a/src/main/java/Command.java b/src/main/java/command/Command.java
similarity index 89%
rename from src/main/java/Command.java
rename to src/main/java/command/Command.java
index 9a631e0401..8d5aa357c4 100644
--- a/src/main/java/Command.java
+++ b/src/main/java/command/Command.java
@@ -1,9 +1,9 @@
 package duke.command;
 
-import duke.TaskList;
-import duke.Ui;
-import duke.Storage;
-import duke.DukeException;
+import duke.task.TaskList;
+import duke.util.Ui;
+import duke.util.Storage;
+import duke.exception.DukeException;
 
 /**
  * Abstract Command class that contains execute() for
diff --git a/src/main/java/DeleteCommand.java b/src/main/java/command/DeleteCommand.java
similarity index 92%
rename from src/main/java/DeleteCommand.java
rename to src/main/java/command/DeleteCommand.java
index f092f56dbd..8b64cd95e5 100644
--- a/src/main/java/DeleteCommand.java
+++ b/src/main/java/command/DeleteCommand.java
@@ -1,10 +1,10 @@
 package duke.command;
 
-import duke.DukeException;
-import duke.Parser;
-import duke.Ui;
-import duke.Storage;
-import duke.TaskList;
+import duke.exception.DukeException;
+import duke.util.Parser;
+import duke.util.Ui;
+import duke.util.Storage;
+import duke.task.TaskList;
 import duke.task.Task;
 
 /**
diff --git a/src/main/java/DoneCommand.java b/src/main/java/command/DoneCommand.java
similarity index 92%
rename from src/main/java/DoneCommand.java
rename to src/main/java/command/DoneCommand.java
index 722b9090be..3cfef136f1 100644
--- a/src/main/java/DoneCommand.java
+++ b/src/main/java/command/DoneCommand.java
@@ -1,10 +1,10 @@
 package duke.command;
 
-import duke.DukeException;
-import duke.Parser;
-import duke.Ui;
-import duke.Storage;
-import duke.TaskList;
+import duke.exception.DukeException;
+import duke.util.Parser;
+import duke.util.Ui;
+import duke.util.Storage;
+import duke.task.TaskList;
 import duke.task.Task;
 
 /**
diff --git a/src/main/java/ExitCommand.java b/src/main/java/command/ExitCommand.java
similarity index 94%
rename from src/main/java/ExitCommand.java
rename to src/main/java/command/ExitCommand.java
index 4bda058632..bf8712bafb 100644
--- a/src/main/java/ExitCommand.java
+++ b/src/main/java/command/ExitCommand.java
@@ -1,8 +1,8 @@
 package duke.command;
 
-import duke.Ui;
-import duke.Storage;
-import duke.TaskList;
+import duke.util.Ui;
+import duke.util.Storage;
+import duke.task.TaskList;
 
 /**
  * Command containing method for exiting program.
diff --git a/src/main/java/FindCommand.java b/src/main/java/command/FindCommand.java
similarity index 92%
rename from src/main/java/FindCommand.java
rename to src/main/java/command/FindCommand.java
index b60a6f1b19..de85afba73 100644
--- a/src/main/java/FindCommand.java
+++ b/src/main/java/command/FindCommand.java
@@ -1,10 +1,10 @@
 package duke.command;
 
-import duke.DukeException;
-import duke.Parser;
-import duke.Ui;
-import duke.Storage;
-import duke.TaskList;
+import duke.exception.DukeException;
+import duke.util.Parser;
+import duke.util.Ui;
+import duke.util.Storage;
+import duke.task.TaskList;
 import duke.task.Task;
 
 /**
diff --git a/src/main/java/ListCommand.java b/src/main/java/command/ListCommand.java
similarity index 94%
rename from src/main/java/ListCommand.java
rename to src/main/java/command/ListCommand.java
index 020fd4e81e..a5a500f038 100644
--- a/src/main/java/ListCommand.java
+++ b/src/main/java/command/ListCommand.java
@@ -1,8 +1,8 @@
 package duke.command;
 
-import duke.Ui;
-import duke.Storage;
-import duke.TaskList;
+import duke.util.Ui;
+import duke.util.Storage;
+import duke.task.TaskList;
 
 /**
  * Command containing method for listing Tasks in TaskList.
diff --git a/src/main/java/data/duke.txt b/src/main/java/data/duke.txt
new file mode 100644
index 0000000000..8f5b311d6e
Binary files /dev/null and b/src/main/java/data/duke.txt differ
diff --git a/src/main/java/duke/DialogBox.class b/src/main/java/duke/DialogBox.class
new file mode 100644
index 0000000000..cf3119145a
Binary files /dev/null and b/src/main/java/duke/DialogBox.class differ
diff --git a/src/main/java/duke/Duke.class b/src/main/java/duke/Duke.class
index e6d1e04582..d07e6146d6 100644
Binary files a/src/main/java/duke/Duke.class and b/src/main/java/duke/Duke.class differ
diff --git a/src/main/java/duke/DukeException.class b/src/main/java/duke/DukeException.class
deleted file mode 100644
index 2fc7a39c06..0000000000
Binary files a/src/main/java/duke/DukeException.class and /dev/null differ
diff --git a/src/main/java/duke/DukeLogic.class b/src/main/java/duke/DukeLogic.class
new file mode 100644
index 0000000000..2f7b350da5
Binary files /dev/null and b/src/main/java/duke/DukeLogic.class differ
diff --git a/src/main/java/duke/Launcher.class b/src/main/java/duke/Launcher.class
new file mode 100644
index 0000000000..72ecf69fdb
Binary files /dev/null and b/src/main/java/duke/Launcher.class differ
diff --git a/src/main/java/duke/Main.class b/src/main/java/duke/Main.class
index 5801d5d62e..2d0b36aa38 100644
Binary files a/src/main/java/duke/Main.class and b/src/main/java/duke/Main.class differ
diff --git a/src/main/java/duke/MainWindow.class b/src/main/java/duke/MainWindow.class
new file mode 100644
index 0000000000..0b1722d2fe
Binary files /dev/null and b/src/main/java/duke/MainWindow.class differ
diff --git a/src/main/java/duke/Parser.class b/src/main/java/duke/Parser.class
deleted file mode 100644
index f8239ddc8d..0000000000
Binary files a/src/main/java/duke/Parser.class and /dev/null differ
diff --git a/src/main/java/duke/Ui.class b/src/main/java/duke/Ui.class
deleted file mode 100644
index da44202073..0000000000
Binary files a/src/main/java/duke/Ui.class and /dev/null differ
diff --git a/src/main/java/duke/command/AddCommand.class b/src/main/java/duke/command/AddCommand.class
index 81e45b6b41..7973b4cdcd 100644
Binary files a/src/main/java/duke/command/AddCommand.class and b/src/main/java/duke/command/AddCommand.class differ
diff --git a/src/main/java/duke/command/Command.class b/src/main/java/duke/command/Command.class
index cdc2caefdd..61eccb1dc2 100644
Binary files a/src/main/java/duke/command/Command.class and b/src/main/java/duke/command/Command.class differ
diff --git a/src/main/java/duke/command/DeleteCommand.class b/src/main/java/duke/command/DeleteCommand.class
index 175bff6e33..71cf32e34a 100644
Binary files a/src/main/java/duke/command/DeleteCommand.class and b/src/main/java/duke/command/DeleteCommand.class differ
diff --git a/src/main/java/duke/command/DoneCommand.class b/src/main/java/duke/command/DoneCommand.class
index ccf61be833..2296ecbc43 100644
Binary files a/src/main/java/duke/command/DoneCommand.class and b/src/main/java/duke/command/DoneCommand.class differ
diff --git a/src/main/java/duke/command/ExitCommand.class b/src/main/java/duke/command/ExitCommand.class
index c974318209..667e8cc4ba 100644
Binary files a/src/main/java/duke/command/ExitCommand.class and b/src/main/java/duke/command/ExitCommand.class differ
diff --git a/src/main/java/duke/command/FindCommand.class b/src/main/java/duke/command/FindCommand.class
index 791301e8d1..1148b71e9f 100644
Binary files a/src/main/java/duke/command/FindCommand.class and b/src/main/java/duke/command/FindCommand.class differ
diff --git a/src/main/java/duke/command/ListCommand.class b/src/main/java/duke/command/ListCommand.class
index cee7c16ab2..da52629dc3 100644
Binary files a/src/main/java/duke/command/ListCommand.class and b/src/main/java/duke/command/ListCommand.class differ
diff --git a/src/main/java/duke/exception/DukeException.class b/src/main/java/duke/exception/DukeException.class
new file mode 100644
index 0000000000..98e508329b
Binary files /dev/null and b/src/main/java/duke/exception/DukeException.class differ
diff --git a/src/main/java/duke/TaskList.class b/src/main/java/duke/task/TaskList.class
similarity index 91%
rename from src/main/java/duke/TaskList.class
rename to src/main/java/duke/task/TaskList.class
index f1b1b4c32f..734713d3e8 100644
Binary files a/src/main/java/duke/TaskList.class and b/src/main/java/duke/task/TaskList.class differ
diff --git a/src/main/java/duke/util/Parser.class b/src/main/java/duke/util/Parser.class
new file mode 100644
index 0000000000..bccfa71e57
Binary files /dev/null and b/src/main/java/duke/util/Parser.class differ
diff --git a/src/main/java/duke/Storage.class b/src/main/java/duke/util/Storage.class
similarity index 58%
rename from src/main/java/duke/Storage.class
rename to src/main/java/duke/util/Storage.class
index 60ddbe3a2c..78d564f963 100644
Binary files a/src/main/java/duke/Storage.class and b/src/main/java/duke/util/Storage.class differ
diff --git a/src/main/java/duke/util/Ui.class b/src/main/java/duke/util/Ui.class
new file mode 100644
index 0000000000..c4b4ba472a
Binary files /dev/null and b/src/main/java/duke/util/Ui.class differ
diff --git a/src/main/java/DukeException.java b/src/main/java/exception/DukeException.java
similarity index 92%
rename from src/main/java/DukeException.java
rename to src/main/java/exception/DukeException.java
index 347503193f..daa62a2058 100644
--- a/src/main/java/DukeException.java
+++ b/src/main/java/exception/DukeException.java
@@ -1,4 +1,4 @@
-package duke;
+package duke.exception;
 
 /**
  * Exception class for Duke.
diff --git a/src/main/java/resources/DaDuke.png b/src/main/java/resources/DaDuke.png
new file mode 100644
index 0000000000..d893658717
Binary files /dev/null and b/src/main/java/resources/DaDuke.png differ
diff --git a/src/main/java/resources/DaUser.png b/src/main/java/resources/DaUser.png
new file mode 100644
index 0000000000..3c82f45461
Binary files /dev/null and b/src/main/java/resources/DaUser.png differ
diff --git a/src/main/java/Deadline.java b/src/main/java/task/Deadline.java
similarity index 100%
rename from src/main/java/Deadline.java
rename to src/main/java/task/Deadline.java
diff --git a/src/main/java/Event.java b/src/main/java/task/Event.java
similarity index 100%
rename from src/main/java/Event.java
rename to src/main/java/task/Event.java
diff --git a/src/main/java/Task.java b/src/main/java/task/Task.java
similarity index 100%
rename from src/main/java/Task.java
rename to src/main/java/task/Task.java
diff --git a/src/main/java/TaskList.java b/src/main/java/task/TaskList.java
similarity index 98%
rename from src/main/java/TaskList.java
rename to src/main/java/task/TaskList.java
index 63d565ec89..b5a2b86af3 100644
--- a/src/main/java/TaskList.java
+++ b/src/main/java/task/TaskList.java
@@ -1,4 +1,4 @@
-package duke;
+package duke.task;
 
 import duke.task.Task;
 import java.io.Serializable;
diff --git a/src/main/java/Todo.java b/src/main/java/task/Todo.java
similarity index 100%
rename from src/main/java/Todo.java
rename to src/main/java/task/Todo.java
diff --git a/src/main/java/Parser.java b/src/main/java/util/Parser.java
similarity index 77%
rename from src/main/java/Parser.java
rename to src/main/java/util/Parser.java
index 2e00806377..990338c5b5 100644
--- a/src/main/java/Parser.java
+++ b/src/main/java/util/Parser.java
@@ -1,4 +1,4 @@
-package duke;
+package duke.util;
 
 import duke.command.Command;
 import duke.command.AddCommand;
@@ -11,8 +11,9 @@
 import duke.task.Todo;
 import duke.task.Deadline;
 import duke.task.Event;
-import duke.DukeException;
+import duke.exception.DukeException;
 import java.util.HashMap;
+import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 
@@ -116,34 +117,37 @@ public static Task parseTask(String input) throws DukeException {
         String type = words[0];
     
         String info = input.substring((type + " ").length());
-        switch (type) {
-        case "todo":
-            if (info.equals("")) {
-                throw new DukeException("☹ OOPS!!! The description of a todo cannot be empty.");
-            }
-            return new Todo(info);
-        case "deadline":
-            String[] args = info.split("/by");
-            String description = args[0].trim();
-            Date date;
-            try {
-                date = dateFormatter.parse(args[1].trim());
-            } catch (Exception e) {
-                throw new DukeException("☹ OOPS!!! Incorrect date format.");
-            }
-            return new Deadline(description, date);
-        case "event":
-            args = info.split("/at");
-            description = args[0].trim();
-            try {
-                date = dateFormatter.parse(args[1].trim());
-            } catch (Exception e) {
-                throw new DukeException("☹ OOPS!!! Incorrect date format.");
+        try {
+            switch (type) {
+            case "todo":
+                if (info.equals("")) {
+                    throw new DukeException("☹ OOPS!!! The description of a todo cannot be empty.");
+                }
+                return new Todo(info);
+            case "deadline":
+                String[] args = info.split("/by");
+                String description = args[0].trim();
+                Date date;
+                try {
+                    date = dateFormatter.parse(args[1].trim());
+                } catch (ParseException e) {
+                    throw new DukeException("☹ OOPS!!! Incorrect date format.");
+                }
+                return new Deadline(description, date);
+            case "event":
+                args = info.split("/at");
+                description = args[0].trim();
+                try {
+                    date = dateFormatter.parse(args[1].trim());
+                } catch (ParseException e) {
+                    throw new DukeException("☹ OOPS!!! Incorrect date format.");
+                }
+                return new Event(description, date);
             }
-            return new Event(description, date);
-        default:
+        } catch (IndexOutOfBoundsException e) {
             throw new DukeException("Invalid task input.");
         }
+        throw new DukeException("Invalid task input.");
     }
 
     /**
diff --git a/src/main/java/Storage.java b/src/main/java/util/Storage.java
similarity index 94%
rename from src/main/java/Storage.java
rename to src/main/java/util/Storage.java
index bb42cafd25..b99057110f 100644
--- a/src/main/java/Storage.java
+++ b/src/main/java/util/Storage.java
@@ -1,7 +1,7 @@
-package duke;
+package duke.util;
 
-import duke.TaskList;
-import duke.DukeException;
+import duke.task.TaskList;
+import duke.exception.DukeException;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.ObjectInputStream;
diff --git a/src/main/java/Ui.java b/src/main/java/util/Ui.java
similarity index 91%
rename from src/main/java/Ui.java
rename to src/main/java/util/Ui.java
index 770390eef6..c22ca0bea3 100644
--- a/src/main/java/Ui.java
+++ b/src/main/java/util/Ui.java
@@ -1,4 +1,4 @@
-package duke;
+package duke.util;
 
 import java.util.Scanner;
 
@@ -6,6 +6,8 @@
  * Ui class that handles output of Duke to the console.
  */
 public class Ui {
+    public String buffer;
+
     String format(String output) {
         return "    ____________________________________________________________\n"
                 + indent(output)
@@ -27,9 +29,14 @@ String indent(String output) {
      * Prints output of Duke.
      */
     public void printResponse(String output) {
+        this.buffer = format(output);
         System.out.println(format(output));
     }
 
+    public String getOutput() {
+        return this.buffer;
+    }
+
     /**
      * Reads input of user from the console.
      * 
diff --git a/src/main/java/view/DialogBox.fxml b/src/main/java/view/DialogBox.fxml
new file mode 100644
index 0000000000..e2b59b6e48
--- /dev/null
+++ b/src/main/java/view/DialogBox.fxml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.image.ImageView?>
+<?import javafx.scene.layout.HBox?>
+
+<fx:root alignment="TOP_RIGHT" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" prefWidth="400.0" type="javafx.scene.layout.HBox" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1">
+   <children>
+      <Label fx:id="dialog" text="Label" wrapText="true" />
+      <ImageView fx:id="displayPicture" fitHeight="99.0" fitWidth="99.0" pickOnBounds="true" preserveRatio="true" />
+   </children>
+   <padding>
+      <Insets bottom="15.0" left="5.0" right="5.0" top="15.0" />
+   </padding>
+</fx:root>
\ No newline at end of file
diff --git a/src/main/java/view/MainWindow.fxml b/src/main/java/view/MainWindow.fxml
new file mode 100644
index 0000000000..3add5bc787
--- /dev/null
+++ b/src/main/java/view/MainWindow.fxml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.ScrollPane?>
+<?import javafx.scene.control.TextField?>
+<?import javafx.scene.layout.AnchorPane?>
+<?import javafx.scene.layout.VBox?>
+
+<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="400.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="duke.MainWindow">
+   <children>
+      <TextField fx:id="userInput" layoutY="558.0" onAction="#handleUserInput" prefHeight="41.0" prefWidth="324.0" AnchorPane.bottomAnchor="1.0" />
+      <Button fx:id="sendButton" layoutX="324.0" layoutY="558.0" mnemonicParsing="false" onAction="#handleUserInput" prefHeight="41.0" prefWidth="76.0" text="Send" />
+      <ScrollPane fx:id="scrollPane" hbarPolicy="NEVER" hvalue="1.0" prefHeight="557.0" prefWidth="400.0" vvalue="1.0">
+         <content>
+            <VBox fx:id="dialogContainer" prefHeight="552.0" prefWidth="388.0" />
+         </content>
+      </ScrollPane>
+   </children>
+</AnchorPane>
\ No newline at end of file