Hello.
user
Hello, how can I help you?
assistant
I want to change my existing reservation, as my my exams have postponed suddenly. Can you please help me with this?
user
Sure, may I know your good name to check the reservation status?
assistant
I am Mary Adams.
user
There is no reservation found under your name to do modifications in that.
assistant
Ok, no problem. Thank you for your information.
user
Thank you for choosing us.
assistant