Hello, I am Carol Johnson.
user
Hello, how can I help you now?
assistant
I would like to change my reservation due to my musical event has been postponed.
user
Ok, please wait for moment while I check for he reservation.
assistant
Ok.
user
Thanks for waiting, sorry to inform you there is no any reservation found on your name.
assistant
Thank you for your response.
user
Thank you, have a nice day.
assistant