Hi.
Hello. How can I assist you?
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.
Ok. I will help you in changing your reservation.
Ok.
Please wait for a minute, I will check for the reservation and revert you.
Sure.
Thanks for your time. There was no reservation found with your name.
No problem. Thank you for your information.
Thank you for choosing us.