User: Hi, I'd like to see a movie
Assistant: Okay, what would you like to see?
User: Birds of Prey
Assistant: Okay and where would you like to see it?
User: Cobb West Chester
Assistant: OKay and at what time?
User: 7 pm this Friday
Assistant: Okay and how many tickets?
User: 4 please
Assistant: And in standard or IMAX
User: IMAX
Assistant: Okay so you want 4 IMAX tickets...
User: actually I changed my mind. I want standard.
Assistant: So you want standard now instead of IMAX