Hello.
user
Hello, How can I help you out?
assistant
 I am Joshua Martin want to cancel my reservation due to prepone of my exams.
user
Ok. Please wait a minute, I will revert you back.
assistant
Ok.
user
Your name is not in the reservation list, to proceed with cancellation.
assistant
Ok, thank you for providing information.
user
Thanks for availing us, Have a great day.
assistant