You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a minute, I will revert to you with current status.

USER: Sure.

ASSISTANT: I am sorry to inform that there is no reservation found with your name.

USER: No problem, thanks for your information.

ASSISTANT: Thanks for availing us.