You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Me and my friends planed for a vacation, but one of my friend met with an accident.

ASSISTANT: Ok.

USER: So, I want to cancel my reservation, can you help me with that?

ASSISTANT: May I know your name please?

USER: Sure, Rebecca Moore here.

ASSISTANT: Please wait.

USER: Sure.

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

USER: Ok, thank you.

ASSISTANT: Thank you.