Hello, myself David Baker.
Hello. How may I help you for the day?
I want to change my destination airport codes in my existing reservation, can you please help me out?
Please wait a  moment, let me check with your details.
Ok, I will wait for your response.
Please provide me you trip details.
My planned trip dates are 10/08 and 10/10.
Can you please provide your airport codes which you are travelling.
Sure, my location airport codes are PHX and DCA.
There is a flight available with one connection and the price is 200, can I proceed with that?'.
Fine, please reserve me a seat.
Your ticket has been booked with the Sprint airlines and the flight number is 1002.
Thank you for your quick service.
Thank you for reaching us.Have a safe journey ahead.