Hi.
user
Hello, how may I help you today?
assistant
I want to cancel my recent  reservation due to sudden cancellation of my trip. Can you help me?
user
Sure, can I know your full name?
assistant
Betty Moore.
user
We found your reservation, can I proceed for cancellation?
assistant
Yes, you can.
user
Your ticket has been cancelled.
assistant
Thank you for your help.
user
Thank you for choosing us.
assistant