You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, may I know your name please?

USER: My name is Jack Martinez.

ASSISTANT: I am sorry no reservation found on your name.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.