You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my recent ticket booking due to office work that my manager did not approve my leaves, so can you please cancel it?

ASSISTANT: Sure, may I know your name?

USER: My name is Gregory Young.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us.