Hello.
Hello, how can I help you?
I am Amanda Taylor want to change my reservation due to prepone of my meeting with clients. Can you help me in changing?
Please wait a while, I will check and inform you.
Ok.
There is a reservation on your name, can you please share your desired travel dates?
 My travel dates are 12/31 and 01/01.
May I know your preferred airport codes please?
I will depart to GA-ATL from TX-IAH.
Wait a While.
Ok.
Sorry to say, there is no flight on your desired travel dates.
Ok, not a problem.
Thank you for opting us.