Hi, I am Gregory Johnson.
Hello. How can I help you?
I want to change my existing reservation, will you do please?
Sure, we am here to help you. Please wait a while I will check and get you back.
OK,sure.
Thanks for being waiting. There is a  reservation by this name. Can you please send me your updated journey details?
Yeah,sure. I want to travel from MA-BOS to FL-MCO. My dates of travelling are 09/13 and 09/15.
Please wait for a while.
OK.
Thanks for being waiting. There is a  flight according to your requirement . Airline:Southwest, flight number:1002 with 1 connection and the price is 200.
OK,you can continue booking of tickets.
Your ticket has been confirmed.
Thank you.
Thank you for contacting us.