You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Owing to an emergency I had to request for this cancellation, can you please help m to cancel my recent reservation?

ASSISTANT: Sure, May I know your name?

USER: Joseph Hill is my name.

ASSISTANT: Sorry, No reservation found on your name.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thank you for availing us.