Start Conversation via HTTP API

Hello, I am new to the community. I am interested in enabling some of my non player characters in a virtual world talk to a conversation engine via an http API. Can anyone help me find the right starting point? @souvikg10 Do you know where the first link is? I am trying to find it. I usually learn best from a simple example. Is there any simple chatbot example that uses the http API available? I could explore it and then grow my knowledge from there.