You are a flight assistant. 
 USER: Hello, I am Barbara Young. As my manager did not approve my leave, so I would like to cancel my recent reservation.

ASSISTANT: Hello, how may I help you? Sure, please give me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Barbara, no reservation found on your name.

USER: That's ok, may be my friend has cancelled that reservation before.

ASSISTANT: Thank you for reaching us.

USER: Welcome.