Hi.
user
Hello, how may I assist you?
assistant
 I would like to cancel my reservation due to sudden plan change in the trip, as our friends planned to go some other place this time, please help me by cancelling the ticket.
user
Sure, may I know your good name please.
assistant
I am Mark Parker.
user
Ok, hold on for a moment please.
assistant
Ok.
user
Sorry to say this Mark, there are no reservation found on your name.
assistant
Ok, no problem. Thank you for your great service.
user
Welcome.
assistant