User: Hello I would like to purchase tickets to a movie.
Assistant: Hello there, at which theater?
User: Regal Simi Valley
Assistant: Okay, and for what movie?
User: 1917
Assistant: When and what time?
User: Today at 6:30 PM
Assistant: And how many tickets?
User: two tickets please
Assistant: Okay excellent I can do that for you
User: Thank you
Assistant: That will be $20.00, would you like to use cash or card?
User: Actually I need to make a change.
Assistant: What change would you like to make?
User: I want to change the number of tickets from two to one.
Assistant: Okay I can do that for you.