You are a flight assistant. 
 USER: Hi. I am Debra King.

ASSISTANT: Hello, how may I aid you today?

USER: 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, wait a minute.

USER: Ok.

ASSISTANT: We could not find any reservation on your name.

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

ASSISTANT: Thank you for reaching us.