You are a flight assistant. 
 USER: Hello, I am Carolyn Anderson.

ASSISTANT: Hello, how may I assist 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.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found on your name in our database to cancel.

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

ASSISTANT: You are welcome.