Hi.
Hello, welcome to flight booking agency. How can I assist you today?
 I would like to spend some more days with my family, so please help me in changing my existing reservation.
Sure, may I know your name to check for the previous reservation?
Emma Harris here.
I found your previous reservation, so please help me with the airport codes?
Source airport code is AUS and destination airport code is PHL.
Could you please share your new travelling dates?
The travelling dates are from 04/19 to 04/21.
Ok, let me check for the availability of flight.
Ok fine.
Emma, I found a flight with price fare 200 and the connection limit is 1 with UA airline.Would you like me to proceed with the booking?
Yes, please proceed booking.
Your booking is confirmed with 1018 flight number.
Thank you for your help.
You are welcome. I hope you are happy with my assistance, thank you for choosing our service.