You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER:  Unfortunately I have emergency meeting so I want to cancel my reservation, can you please help me to cancel my reservation?

ASSISTANT: Sure, I can help you in doing that.

USER: Thank you.

ASSISTANT: Please forward your name for checking purpose.

USER: I am Brian Martinez.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name in our reservation list.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you for the information.