Hello, I am Carolyn Robinson.
user
Hello, how can I serve you today?
assistant
I need to change my existing reservation, as my exam scheduled has been postponed. Please help me in changing?
user
Sure, please wait for a moment.
assistant
Ok.
user
Sorry to say that, no reservation was found with your good name.
assistant
Ok, no worries.
user
Thank you for opting us.
assistant
Thanks for your service.
user