You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi. How may I aid you?

USER: I want to cancel my reservation, as I am no longer interest in that trip, as most of my friends are not attending.

ASSISTANT: Sure, just a minute please. May I know your name please?

USER: My name is Justin Thompson.

ASSISTANT: No reservation found on your request Mr.Justin Thompson.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.