Hello.
user
Hello. How can I help you?
assistant
I want to change my existing reservation, as my exams have postponed suddenly. Can you please help me?
user
Sure, can you please provide the name on which your reservation has been confirmed?
assistant
Gregory Martin.
user
Sorry, there is no reservation found by your name.
assistant
Ok, no problem. Thank you for your information.
user
Thank you and have a nice day.
assistant