User: Hi I wanna see a movie
Assistant: sure let's book some tickets
User: I want two tickets please
Assistant: sure for what movie?
User: Is Frozen 2 playing there?
Assistant: Yes it is
User: I want two for that
Assistant: Okay, and what theater?
User: I want Harkins
Assistant: sure, Harkins it is
User: and is it playing at 7:30?
Assistant: Yes it is
User: Okay, I want that showing
Assistant: sure thing
User: I changed my mind actually
Assistant: what is it?