User: Hi, I would like to buy a ticket. Can you help?
Assistant: Which movie would you like to see and buy a ticket for?
User: I want to see the Joker.
Assistant: How many people?
User: Just two.
Assistant: What time?
User: Can you make it for 6 PM
Assistant: Do you have a screening type preference?
User: Standard is fine.
Assistant: Do you have any other requests.
User: no, not at this time
Assistant: The purchase price will be $20.00
User: Can I change my screening preference.
Assistant: Yes, what would you like to change it to.