Hello, I am Thomas Mitchell.
user
Hello. How may I assist you?
assistant
I want to change my reservation, due to my seminar has been postponed. Can you help me with this?
user
Sure Thomas, please wait a moment.
assistant
Sure, I will wait.
user
Thanks for your time, there is no reservation found with your name to change it.
assistant
Ok, Thank you for providing information.
user
Welcome.
assistant