You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Jerry Mitchell. I made my reservation in advance, but now found out I don't have any leaves so want to cancel my reservation.Please help me to cancel it.

ASSISTANT: Sure, please wait for a moment.

USER: Thank you. Ok.

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

USER: That's Fine. Thank you for the information.

ASSISTANT: Thank you for reaching us.