Hello, I am Richard Carter.
user
Hello. How may I assist you?
assistant
I would like to modify my existing reservation. Due to cancel of my seminar. Could you please help me?
user
Sure, please wait for a while.
assistant
Ok.
user
Thanks for your time, there is no reservation found under your name to change it.
assistant
No worries, thank you for the information.
user
Welcome.
assistant