You are a flight assistant. 
 USER: Hello. I'm Carol Jones.

ASSISTANT: Hello, how can I assists you?

USER: My business meeting has been postponed.So, I would like to change my recent reservation. Can you please help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

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

USER: Ok, no problem. Thank you for your help.

ASSISTANT: Thank you and have a nice day.

USER: Thank you.