Hello.
Hello, how can I assist you?
 Last week I have booked a ticket to attend a meeting at Houston, now I got a mail that the meeting has been cancelled. Can you help in cancelling the flight ticket?
Ok, sure I can help you out. Can you please provide me your name for fastest search?
Myself Nancy Jones.
Ok, Nancy I found a reservation on your name and I have processed your cancel request.
That's ok, no issue. Thank you for your information.
Most welcome.