User: hello, I want to buy movie tickets.
Assistant: which movie are you interested?
User: I want to watch Shrek.
Assistant: there two classes of tickets.
User: I want VIP tickets
Assistant: that will be 25 dollars
User: ok. can I pay with master card?
Assistant: yes. what is your nujmber?
User: 3520193
Assistant: great. your ticket number is 6792
User: Thank you.
Assistant: you are welcome. do you need anything else?
User: yes please, can I have one regular ticket?
Assistant: yes please.
User: give me your card again
Assistant: 3520193