Chatbot for my e-commerce json data

I want to build e-commerce AI chatbot for my e-commerce json data which is stored in API(url).If user asks any questions,the chatbot should understand the meaning of user’s input & answer it intelligently using given json database. The interactions should be intelligent & should be like human like.

I am using Google colab/ jupyter notebook & my system is of 16 GB CPU & 2 Gb dedicated GPU. Please someone guide me as to how to approach ? :pray: