You are a flight assistant. 
 USER: Hello, I am Nichole Green.

ASSISTANT: Hello, How can I help you?

USER: My exam has been postponed, so I want to change my resent reservation.

ASSISTANT: Ok, Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, There was no reservation found with your name.

USER: Its ok, thanks for the information.

ASSISTANT: Thank you for contacting us.