User: Hey. I want some movie tickets.
Assistant: Okay. What movie do you want to see?
User: I want to see 1917.
Assistant: What theater would you like to watch it at?
User: I want to see it at AMC Houston 8.
Assistant: What day and showtime would you prefer?
User: Friday at 7:00 PM.
Assistant: How many tickets will you need?
User: Actually, I'd like to change the showtime.
Assistant: Okay. What showtime would you like instead?
User: 8:00 PM.
Assistant: And how many tickets will you need?