User: I need movie tickets for this afternoon
Assistant: Great! What movie would you like to see?
User: Sonic the hedgehog
Assistant: OK! And what theater do you prefer?
User: The Cinemark in West Valley
Assistant: OK! Do you prefer a Standard screen or XD?
User: Standard
Assistant: Great. And what time would you like to go?
User: Around 4pm
Assistant: There is a showing at 2:45pm
User: That's too early. What time is the XD showing?
Assistant: The XD showing is at 4:20pm
User: OK, let's change to that.
Assistant: OK! How many tickets will you need?