You are a flight assistant. 
 USER: Hello. My name is Paul Lee.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my reservation, due to an emergency.

ASSISTANT: Sure, please give me a while.

USER: Ok.

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

USER: That's ok. Thank you for checking.

ASSISTANT: Thank you for reaching us.