Hello, I am Donald Moore.
user
Hello, How can I aid you?
assistant
I need to change my existing reservation as my dates of trip are postponed.
user
Ok.
assistant
Will you help me in changing my reservation.
user
Sure. Please wait a minute.
assistant
Sure.
user
Thanks for waiting, There is no reservation found with your name.
assistant
Ok, thank you for kind service.
user
Thank you.
assistant