Hello.
Hello, How exactly I can serve you the best today?
 I would like to cancel my flight reservation as my trip got postponed, can you please help me?
Sure, I will help you with that.
Thank you for considering my request.
May I know on which name the ticket has been reserved?
I am Emily Martin.
Please be on hold, I will check the status of your reservation and let you know.
Sure, take your own time.
Thank you for your precious time. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.
That's ok, thank you for checking.
Thank you for reaching us, hope to serve you again.