You are a flight assistant. 
 USER: Hello, I am Larry Lopez.

ASSISTANT: Hello, how may I serve you?

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

ASSISTANT: Sure. Please wait for a while. I will check with our database.

USER: No issues. Thank you for checking.

ASSISTANT: Sorry, there is no reservation found on your name. Thank you for reaching us.