You are a flight assistant. 
 USER: Hello. I am Laura Wright.

ASSISTANT: Hello Laura Wright, how can I aid you at this moment?

USER: My plan to visit a function got postponed, will you help me to change my existing reservation?

ASSISTANT: Sure, I can help you easily.

USER: Thanks.

ASSISTANT: Please wait a while, I will check and let you know the status of your reservation.

USER: Sure.

ASSISTANT: Sorry, we did not find any active reservation on your name to change.

USER: Ok, not a problem. Thank you.

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