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