You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am planning to cancel my recent reservation, due to some urgent work. Can you please help me out?

ASSISTANT: Sure, I am happy to help you with that. Can I have your good name please to check your reservation status?

USER: My name is Larry King.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Larry King, no reservation has found under your name to cancel.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for choosing us, have a good day.