You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can serve you at this moment?

USER: Owing to an emergency, I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: Sure, we are here to help you. May I know your name to check your reservation status?

USER: Myself William Moore.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: Sorry we could not find any reservation on your name in our database.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.