Hello.
Hello, how can I aid you?
I want to cancel my recent reservation due to sudden rainfall at my source. Can you please help me with this?
Sure, I am here to help you. May I know your name to check with existing reservation?
I am David Miller.
 I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.
Ok, no problem. Thank you for checking.
Thank you for choosing us.