Hello.
Hello. How may I assist you?
I want to change my existing reservation, due to some health issue. Can you please help me out?
 To proceed further, can I have your name please?
My name is Stephen Mitchell.
Ok, please wait.
Sure.
Thanks for waiting, I have gone through the reservation list twice but could not find any reservation active under your name.
That's ok, thank you for checking.
Welcome Stephen Mitchell.