Hello.
Hello. How can I aid you?
My scheduled examination dates has been postponed, could you please help me with changing my recent reservation?
Sure, We are here to  help you. May I know your name?
My reservation was done under the name Barbara Evans.
Give me a minute.
Sure, take your time.
 Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to change it.
Ok, not an issue. Anyways, thank you for the information.
Thank you for reaching us.