You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Nelson.

ASSISTANT: Nelson, what can I do for you?

USER: I had planned to go on a vacation, but it was postponed.I am looking for change of my recent reservation. Can you help me out?

ASSISTANT: Sure, I will help you, please wait for a moment to check your reservation status.

USER: Sure, take your time.

ASSISTANT: Nelson, In my database I did not found any reservation with your name. Anything else to help you.

USER: That's ok.

ASSISTANT: My pleasure, have a good day.

USER: Anyways, thank you for checking.

ASSISTANT: Most welcome.