You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: can you please assist me in changing my reservation as my meeting got postponed?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: I am Benjamin White.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no reservation found on your given name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for reaching us, have a nice day.