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