How to implement trained model(build in Python ) in chatbot

I have a project to build a customize web base chatbot ,

 

I know there are alot vendor that provide service for such kind of thing. But I want to know how we integrate my nlp solution building in Python on given dataset, to chatbox available on website , when user enter any query in that box and my trained model take that input and response according. I am unable to fill this gap between.