Hi.
user
Hello, how can I aid you today?
assistant
 I want to cancel my recent reservation due to sudden cancellation of my trip. Can you help me?
user
Sure, I am here to help you. May I know your name to check with existing reservation?
assistant
Gary Hill here.
user
 I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.
assistant
Sure. Thanks for the information.
user
Thank you for opting us.
assistant