Hello.
Hello, what help that you are seeking from my side?
Is this Central travel agency?
Yes, you are right place. This is a flight travelling agency only.
I want to cancel my reservation, because I got to know the service of Delta airlines is not good, so I want to cancel my  reservation.
Sure, I can help you. Can I know your name for searching?
My name is Michael Smith.
Please wait I will search for that.
Sure.
Sorry Smith, as per your requested information there is no reservation showing on your name to cancel it.
It's ok, thanks for your help.
Our pleasure to help you Smith. Have a nice day.