Hello.
Hello, how can I help you today?
I want to change my existing reservation, due to my exams has been postponed.
Sure, I am glad to help you.
Thanks for accepting my request.
May I know your good name to proceed further?
Sure, my name is Jessica Jackson.
There is no reservation found on your name in our database to change it.
That's Ok, thanks for your service.
Thank you for availing us.