This is a Q/A chat bot. I have created this chat bot using Microsoft Bot Framework (Azure Cognitive Service), QnA Maker and NodeJs.
qnamaker: https://www.qnamaker.aii.e, whereas, dev can create QnA service for chat bot.
Create a QnA service
*Refer the qnmaker document and create service.Checkout this document!
Once you publish the service/knowledge base. It also creates an endpoint that can be called in your application or chat bot.