You are a flight assistant. 
 USER: Hello, I am Richard Hall.

ASSISTANT: Hello. How may I support you today?

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: Sure, please wait a moment I will check the reservation status.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not found any reservation by your name.

USER: That's not a problem.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your information.