User: Hi I would like to purchase some tickets please
Assistant: Sure, I can help you with that
User: Great.
Assistant: How many tickets would you like?
User: I need two, One adult and one child to Sonic the Hedgehog.
Assistant: At which theater please?
User: The picture show in East Windsor NJ at 3 m on the 19th of March.
Assistant: Ok sure, let me check that for you.
User: Ok.
Assistant: Ok so I have two tickets to Sonic the Hedgehog one adult and one child.
User: Oh, can I change that please?
Assistant: Sure.