Hey, right now I am myself the AI in the backend after the initial questionnaire is finished. I wanted to validate the product / need before building out more complexity.
Your real competition is virtual personal assistants. The advantage of hiring them over you is that I can have a long-term relationship with them. Sorry to be pessimistic, but I don’t think you have anything here.
I am more than happy refunding $1 to someone who pays and isn't happy with the results. Otherwise people get 3 free credits.
I actually don't mind booking flights, but I truly loathe expense reporting. If you can do that task then you have a customer for life my friend.