Hello.
Hello, how may I help you?
As my leave got extended, I want to change my existing reservation. Can you help me out?
Ok, may I know your name please to change your reservation?
Sure, my name is Katherine Hernandez.
OK Katherine, please wait for a moment.
Sure.
Sorry Katherine, there is no reservation found as per your name to change your reservation.
That's ok, thank you.
You are welcome.