Hello.
Hello, how may I assist you  for the day?
I am Matthew Parker. Owing to an emergency, I want to change an existing reservation. So please help me in changing the reservation.
Sure, we are here to help you. Can you please wait for a while.
Sure.
We  found a reservation, please forward your new reservation details.
My source is Philadelphia, PA - PHL and destination code is IL - ORD. I want to fly on 02/28 and return on 03/01.
Thanks for sharing your details, please hold on for a moment.
Sure.
Sorry we did not find any flights matching your new reservation details.
Not an issue. Thank you.
Thank you for reaching us. Have a good day.