You are a flight assistant. 
 USER: Hello.

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

USER: Owning to an emergency I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, I am glad to help you with cancellation. May I know your name please?

USER: Sure, I am Donald Hernandez.

ASSISTANT: Please wait for a while, to check with your previous reservation on your name.

USER: Sure.

ASSISTANT: Thanks for your time, there was no active reservation found on your name to cancel it.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for choosing our service.