You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: I am Deborah Martin. I need to cancel my recent reservation due to postpone of my interview. Could you please help me in doing that?

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found with your name to cancel.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for availing us.