Hello.
Hello. How can I help you?
I want to change my existing reservation, as my exams got postponed. Can you please help me out with it?
Sure, I will help you to change your reservation.
Thank you.
May I know your name?
Sure, I am Mary Martinez here.
Sorry, no reservation found on your name to change your reservation.
Ok, not a problem. Thanks for the information.
Welcome, have a nice day.