Hello.
user
Hello, how may I assist you?
assistant
I want to change my existing reservation due to postpone of my exams. Can you help me in that?
user
Ok, may I know your name?
assistant
Sharon Nelson here.
user
I am very apologetic to tell you, there is no active reservation by your name.
assistant
Ok, no problem. Thank you for checking.
user
Thank you for choosing us, have a nice day.
assistant