Hi.
Hello, good morning.
My name is Paul Williams.
I hope you are fine, how can I help you?
 My scheduled examination dates has been postponed, so I would like to change my reservation.
Ok. Please wait for a while, I will check the details and get back to you.
Ok.
Sorry for the inconvenience, there is no reservation found on your name.
That's ok, thank you for your help.
Thank you for approaching us, have a nice day.