Hello. I am George Nelson.
Hello, how may I aid you today from my end?
I would like to change my reservation as I am leaving for hometown, can you please help me out?
Sure, I am here to help you out. Please allow me a moment.
Thank you. Sure.
Sorry  George Nelson, there is no reservation on your name in our database.
Ok no problem, thank you for reaching us.
Thank you for reaching us.