Hello, I am Brian Brown.
user
Hello, how can I serve you?
assistant
I just want to change my existing reservation, due to my press conference has been postponed.
user
Ok.
assistant
Can you help me to change it?
user
Sure, please wait a moment.
assistant
Sure.
user
Thanks for waiting, there is no reservation exist with your name.
assistant
Ok, no issue. Thanks for your good response.
user
Thank you.
assistant