You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my recent reservation due to some family problems. Can you please help me with this?

ASSISTANT: Sure, I can do that for you. May I know your name?

USER: Sure, I am Paul Lee.

ASSISTANT: Thank you. Please wait for a while. I will check your reservation status and get back to you.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found under your name in our database.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: You are most welcome and thank you for contacting us.