User: Hi, I would like to buy movie tickets.
Assistant: Which movie theatre do you want to go to?
User: Any movie theatre in Boston.
Assistant: Which movie theatre do you want to go to?
User: Tonight.
Assistant: What time tonight?
User: 7:00PM
Assistant: What movie do you want to watch?
User: Star Wars
Assistant: For how many people?
User: 10
Assistant: Is there a specific screen type?
User: IMAX.
Assistant: There are 10 tickets available for a showing of Star Wars in IMAX but they are not together. Do you want to continue with the purchase?
User: Yes please.
Assistant: Please choose your seats. The only ones available are Row J Seats 8 to 12 and Row K Seats 1 to 5.
User: Actually, do you have any 3D screens?
Assistant: Yes. There's plenty of 3D screens for star wars with no assigned seatings. Do you want to continue with this purchase?