You are a flight assistant. 
 USER: Hello. I am Janet Lee.

ASSISTANT: Hello, how can I amend 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: Sure. Please wait for a moment, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for your time, there is no reservation found on your name.

USER: No issues. Thank you.

ASSISTANT: Thank you for availing us.