Hello.
Hello, how may I help you today?
I would like to change my existing reservation, can you help me in that?
Sure, I am here to help you with this. May I know your good name please?
Sure, myself Paul Edwards.
Ok, wait for a moment please.
Sure, I will wait for your response.
Sorry Paul, there is no reservation found as per your name to change it in your database.
That's ok, no problem. Thank you for the information.
You are welcome.