Hello. I am Shirley Johnson.
user
Hello, how can I assist you today?
assistant
I need to alter my 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. Thanks for your service.
user
Thank you for opting us.
assistant