Hi, I am Debra Davis.
user
Hello, how may I be of your service?
assistant
My appointment with my client in Dallas got postponed, so I want to change my existing reservation. Could you help me in changing.
user
Sure, please wait for a while.
assistant
Ok.
user
Thanks for your patience. We have not found any flight reservation on your given name.
assistant
Ok, no issues.
user
Thanks for choosing us.
assistant
Thanks for your assistance.
user
Thank you.
assistant