User: Help me book tickets for Avengers
Assistant: Ok, which movie
User: AMC 34 at New York
Assistant: Noted, any preference on screen type?
User: Yes, I want IMAX
Assistant: Sure thing, how many tickets will you need?
User: I will need two
Assistant: Sure thing, booking ticket
User: Actually hold on, I see online that there is also 3D for Avengers, is that correct?
Assistant: Yes that is correct
User: Ok, I want 3D tickets for avengers instead.
Assistant: No problem, what time you want it for?