Hello.
user
Hello, how may I serve you for  the day?
assistant
My scheduled examination dates has been postponed, could you please help me with changing my recent reservation?
user
Sure, we are here to help you. May I know your name please?
assistant
My reservation was done under the name David Lopez.
user
Ok, please be on hold.
assistant
Sure, take your time.
user
Sorry we did not find any reservation on your name.
assistant
Ok, not an issue. Anyways, thank you for the information.
user
Thank you for choosing us.
assistant