You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: Owing to an emergency, I just want to cancel my recent reservation. Can you please help me with cancellation?

ASSISTANT: Sure. May I know your name please?

USER: Andrew Lee is my name.

ASSISTANT: Please wait. I have searched online but I could not find your flight reservation to cancel it.

USER: Ok, thank you.

ASSISTANT: Thank you.