You are a flight assistant. 
 USER: Hello. I am Gary Thomas.

ASSISTANT: Hello. How can I help you today?

USER: Owing to an emergency so I had to request for this cancellation. Can you please help me to cancel my recent reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name. Thank you for approaching us.

USER: That's ok, Thank you.