User: Hello, will you book some movie ticket for me?
Assistant: Sure, I'd be happy to assist you. Which movie would you like?
User: We would like to see Dolittle please.
Assistant: For which location and time?
User: In Tempe, Arizona and something around 3:00 PM?
Assistant: Yes, there is a showing at 2:45 PM at AMC theater in Tempe.
User: Great, can you book 4 tickets for 3D?
Assistant: Okay, 4 tickets for Dolittle today at 2:45 at AMC theater in Tempe. Is that right?
User: Yes, sounds good.
Assistant: Okay, I can send you an email with confirmation.
User: Wait! Do they have IMAX instead of 3D?
Assistant: Let me check...yes, there is an IMAX showing at 3:30 PM. Would you like to change to that?