You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Owing to an emergency meeting, I need to cancel my reservation. Can you please cancel my reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is Gary Hill.

ASSISTANT: OK, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.