Hello, I am Brain Smith.
Hello, how may I assist you today?
I want to change an existing reservation, Can you please help me in that?
Sure, I will help you.
Thank you.
To check the reservation data list we need your name, can you please share me your name?
I already mentioned above.
Ok Brain Smith, please wait a moment.
Sure.
Sorry there is no reservation on your name.
That's not a problem. Thanks for your information.
Thank you.