Hi.
user
Hello. How can I assist you?
assistant
I had an invitation to attend the conference in the  CNN studio, but due to some technical reasons my conference was postponed. So, I want to change my existing reservation with the name of Christopher Thompson.
user
Ok. I will help you in changing your reservation.
assistant
Ok.
user
Please wait for a minute, I will check for the reservation and revert you.
assistant
Sure.
user
Thanks for your time. There was no reservation found with your name.
assistant
No problem. Thank you for your information.
user
Thank you for choosing us.
assistant