Hi. I am Stephanie Jackson.
Hello, how may I oblige you today?
Recently I had a reservation with the name of Shirley Moore, to attend for horse racing festival. I cannot attend there due to some health issues. So, I want to change my reservation with the name Stephanie Jackson?
Sure, I would be happy to help you.
Thank you.
 Please, stay online I will check and revert you.
OK.
Thank you for waiting. I have checked in reservation list to change, but could not find any reservation with your name.
Ok, may be it is reserved with some other airline. Thanks for the information.
Thank you for opting us, Have a pleasant day.