Hello.
Hello, how may I serve you at this moment?
I would like to do some modifications in my existing reservation, can you help me in that/.
Sure, I will help you. Please wait for a moment.
Thank you.
May I know your name?
Sure, myself Ruth Roberts.
Sorry, there is no reservation existing on your name.
That's ok, no problem. Thank you for the information.
You are welcome, have a nice day.