Hello, my name is Donna Walker.
user
Hello, how can I address you Donna Walker?
assistant
I just want to change my existing reservation, due to my conference has been postponed.
user
Sure, please give me a moment.
assistant
Sure.
user
Thank you for waiting, no reservation was found based on your name.
assistant
Ok, no problem. Thanks for your help.
user
Thanks for availing us.
assistant