User: Hi, I would like to buy movie tickets.
Assistant: Which movie theatre do you want to go to?
User: Any movie theatre in downtown.
Assistant: What day do you want to go to the movies?
User: Today.
Assistant: What movie do you want to watch?
User: Cats
Assistant: How many tickets?
User: 1 ticket.
Assistant: What time showing do you prefer?
User: 7:00PM.
Assistant: Is there a specific screen type?
User: Standard
Assistant: It does not appear that there is a showing for Cats Standard at 7:00PM. There is a 3D showing of Cats at 7:00PM. Does this alternative work?