Hello.
Hello, how may I assist you today?
I am Alexander Nelson. I would like to change my existing reservation, due to postpone of my scheduled examination dates. Can you please help me?
Sure, I am here to help you.
Thank you.
Please hold on.
Sure.
Thanks for waiting, there is no active reservation found on your name.
Ok, no problem. Thank you for your information.
Thank you for  availing us.