User: I need movie tickets.
Assistant: I can order those for you.
User: Okay I want to see underwater.
Assistant: When would you like to see underwater?
User: 8:00 PM.
Assistant: How many tickets do you need?
User: I need 2 tickets.
Assistant: What kind of screening do you prefer?
User: I prefer IMAX.
Assistant: What theater would you like to go to?
User: Regal cinemas.
Assistant: There are no IMAX showings of underwater at Regal at 8 PM.
User: Okay how about a different time then?
Assistant: What alternate time would you like?