I am a novice in AI and I like to build a chatbot to predict diseases using patient narration as input. Initially, I simply want to train my chatbot on 1 disease only. And once this initial milestone is accomplished then I want to train it on other diseases.
I want to know whether I should build and train my model first and then move towards building a chatbot or should i create a chatbot first and then train it on a disease.
Also please justify which approach is better and why?