Hello, I am Margaret Campbell.
Hello, how may I serve you today?
I want to cancel my recent reservation due to the ongoing tornado at my destination. Can you help me with that?
Sure, we are euphoric to help you.
Thank you.
Please wait for a while, I will check the reservation list and revert to you.
Sure.
We are glad to inform you that, we  found a reservation with your name. Shall I cancel your ticket?
Please cancel it.
Your ticket has been cancelled.
Thanks for your assistance.
Thank you for reaching us with a query.