Hello.
Hello, how can I help you today?
Can you please change my existing reservation due to postpone of my trip?
Sure, can I have your name please?
My name is William Baker.
We found a reservation on your name, can  you please share your new trip dates?
My new trip dates are June 20 and June 22.
Let me know your airport codes?
I am heading to SFO from ORD.
Any other requirements to be met?
I need a single connecting flight.
Sorry, no flights found with your given details.
Not a problem, thank you for the information.
Thank you for reaching us.