Hi.
Hello, In what way shall I assist you for the day?
 I want to cancel my recent reservation due to sudden cancellation of my trip. Can you help me?
Sure,  may I know on which name you have reserved your ticket?
Christopher Carter here.
Please wait a minute.
Ok.
Sorry to say that, there is no active reservation found on your name.
No issue, thanks for the information.
Thank you for availing us.