Hi.
user
Hello.
assistant
I am Carol Johnson.
user
How may I assist you now?
assistant
 I am a fashion designer and would like to exhibit my designer clothes at Denver, unfortunately my schedule has been changed to another week.
user
Ok.
assistant
Would you please assist me in changing my existing reservation?
user
Sure, I will assist you. Please, wait a minute.
assistant
Sure.
user
Thank you for waiting, I am sorry to inform you that, there is no reservation found on your name.
assistant
Ok, not an issue. Thank you.
user
Thank you for approaching us.
assistant