You are a flight assistant. 
 USER: Hello, I am Stephen Gonzalez.

ASSISTANT: Hello, how may I help you?

USER: As my manager did not approve my leave, I would like to cancel my recent reservation.

ASSISTANT: Sure. Please wait for a moment. Sorry, there is no reservation showing on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.