Hello.
Hello. How can I assist you at this moment?
My scheduled examination dates has been postponed, could you please help me with changing my recent reservation?
Sure, I am happy to help you with that. Can I have your name please to check your reservation status?
My reservation was done under the name Jennifer Walker.
Sorry to inform you that  no reservation has found under your name to change.
Ok, not an issue. Anyways, thank you for the information.
Thank you for choosing us, have a good day.