User: Hi I need you to get me some tickets.
Assistant: Sure, for which type event?
User: I want tickets for the movie 1917.
Assistant: Sure, in which town?
User: I'm in Santa Rosa.
Assistant: Ok, do you have a time of day for the showing?
User: I want a 9 pm showing?
Assistant: Do you have a preferred theatre choice?
User: Yes, how about the Rialto Cinema?
Assistant: I'm sorry there isn't a 9 pm showing but there is a 10 pm showing, is that ok?
User: I think so, get me 2 tickets then.
Assistant: Sure, 2 adults for the 10 pm 1917 at Rialto, in Santa Rosa, today.
User: wait a second, when does this play at the Airport theater.?
Assistant: There is a 9:30 pm showing there.
User: In that case, let's switch to Airport, cancel Rialto.
Assistant: Sure, the Change you want is to: 2 Adults, Airport Cinema, 1917, tonight, Airport in Santa Rosa.