Hello.
Hello, how may I aid you today?
I am Kevin Thompson. I want to do some modifications in my previous reservation, due to some health issue. Can you please help  me out?
Sure, I am gleeful to help in modifying the reservation details. Please allow me a moment to check the reservation on your name.
Sure, I will wait for your information.
Sorry Kevin Thompson, there is no reservation found on your name in our database.
That's ok, thank you for your information.
Thank you for reaching us.