That sounds great. If it can't be a reservation app, then at least give me an audio interface to it. Chatting with humans in their noisy, stressed restaurant environment for a low level data entry operation isn't an experience I'm clinging to.
I just don't like talking to machines.
I'll happily tap through the app, though.
Similarly, when someone is being overly friendly to you, it feels strange. Now imagine a robot that does nothing but that automatically.