Hello. I am William Walker.
Hello, how can I help you today?
I want to change my reservation, can you help me?
Sure, please wait a moment. We found a reservation with your name. Kindly mention mention your airport codes?
Ok, my travel dates are 09/23 and 09/25. Airport codes are CLT and IAD.
Sorry to say, no flight found with your requirement.
Ok, thank you.
Thanks for reaching us, have a good day.