Ask HN: Replacing traditional UI with chat based interactions/chatbot possible?

HI I am a software developer by profession and also on my spare time I develop websites and apps for a very little customer base of mine, I have a question I have been wondering for a while, at this moment could I replace an app interface or a web app with a chatbot (say a food delivery app, or a expense tracking app or even an activity tracking app), is there frameworks available to do that? If so can you guys link me to them

to add some context I have dabbled in Google Dialog Flow because I thought it was the answer to my question, but I feel like it fell short to a huge part of my requeirements very quickly.