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