You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: May I have your name please?

USER: Gary Moore here.

ASSISTANT: Please give me a moment, I will check and revert to you.

USER: Sure.

ASSISTANT: There is no reservation found on your given name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for availing us.