Hello,. As my visiting to Chicago got postponed, As there is heavy protest is going on there.
Hello, How may I assist you?
Can you help me in changing my existing reservation?
Sure, to proceed further please mention your name.
I am Jonathan Wilson.
Ok,  please give me a second while I figure this out for you.
Ok.
Sorry for the inconvenience, there is no flight found with your name.
No problem. Thanks for the details.
Thanks for availing us. Have a pleasant day.