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

ASSISTANT: Hello, how can I aid you?

USER: Due to emergency meeting, I want to cancel my reservation. Can you help me with it?

ASSISTANT: Sure. Please wait for a moment.

USER: OK.

ASSISTANT: Unfortunately, we did not find any reservation on your name.

USER: No problem. Thank you for the help.

ASSISTANT: Thank you for opting us.