You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I need to cancel my reservation for a client meeting but I have got a sudden call from my friend that one of my friend got met with an accident so I feel to cancel my reservation. Can you please help me out?

ASSISTANT: Sure. May I know your name please?

USER: Brandon Martin here.

ASSISTANT: Sorry there is no flight reservation to cancel it.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you.