You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I abet you?

USER: I am Andrew Lee. Due to emergency I need to cancel my recent reservation,  Can you please help me with that?

ASSISTANT: Sure. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you.