Hi. I am Samuel Hill.
user
Hello, how can I aid you today?
assistant
Please change my existing reservation.
user
Sure, please wait for a while.
assistant
OK.
user
Thank you for waiting, there is reservation found with the given name.
assistant
OK.
user
Please share your travelling dates?
assistant
04/14 and 04/16 are my travelling dates.
user
Let me know your travelling airport codes?
assistant
ORD and IAD are my travelling airport codes.
user
Thank you for sharing your details, currently there are no flights found with the given details.
assistant
Ok, no problem. Thanks for the information.
user
Thank you for opting us.
assistant