You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name please?

USER: I am George Hernandez.

ASSISTANT: George, how can I assist you?

USER: I just want to cancel my recent reservation because my business trip postponed, can you help me for that?

ASSISTANT: Sure, I will help you with that. Please wait for a moment.

USER: Ok fine.

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

USER: It's ok, no issues.

ASSISTANT: Thank you contacting us, have a great day.

USER: Thanks for your valuable information.