You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Deborah Lee.

ASSISTANT: How may I aid you?

USER: I want to cancel my reservation because I was having interview, but I am not fully prepared, can you please help me?

ASSISTANT: Sure, I will help you in flight ticket cancellation. Please wait for a moment.

USER: Sure.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: That's ok, thank you.

ASSISTANT: Thank you.