Hello.
Hello, how can I aid you now?
 I made a reservation earlier to attend a get together party with my college friends. Due to some issues in college it  got postponed.
OK.
Can you do the changes in my reservation?
Please let me know your name to check your reservation and change it accordingly.?
David Taylor here.
We found your reservation, please update all your travel details?
My airport codes are PHL-PHX. Dates are 07/20 and 07/22.
We found a connecting flight on your details in AA airline. Flight number : 1008 with fare 100. Are you ok with this?
Yes, Please proceed.
Ok, your booking has been made successfully. Thanks for reaching us, have a nice day.