User: I'd like to see a movie tonight.
Assistant: Ok, what movie do you want to see?
User: I'd like to see Glory.
Assistant: Ok, where would you like to see Glory at?
User: I want to see it at the Courthouse AMC.
Assistant: Ok, do you know what time you would like to watch it at?
User: I want to watch it at 7:00 PM.
Assistant: Ok, how many tickets do you need?
User: I need 2 tickets please.
Assistant: Ok, so to confirm. You need 2 tickets to see Glory at the AMC Courthouse at 7:00 PM.
User: Yes, that is correct.
Assistant: What type of screen do you want to see it on?
User: I'd like to see it on an IMAX screen.
Assistant: Ok, the tickets will be $15.99.
User: Actually, I changed my mind.
Assistant: Ok, what has changed?