Hello, I am John Jackson.
Hello, how may I assist you?
 Actually I have planned to attend the client meeting but due to some technical issues the meeting has been cancelled. Can you help me with cancelling my reservation?
Sure, we are here to help you. Please wait for a while, I will check the previous reservation status and get back to you.
Sure.
I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.
OK, no problem may be I have done it with another airline. Thank you for the response.
Thank You for choosing us, Hope to serve you again.