Hello.
user
Hello, do you need any help from us?
assistant
I need to change my reservation due to my planned event got postponed. So please help me with changing my reservation.
user
Sure, could I have your name please?
assistant
Thank you.  Myself Jerry Perez.
user
Ok, I have found your reservation. May I know your trip dates?
assistant
That is great. I have planned my travel dates as Apr 23 and Apr 25.
user
Ok, could you please tell us your location airport codes?
assistant
Sure, DFW and MCO are the required airport codes.
user
Ok, do you need direct or connecting flight?
assistant
I am looking for direct flight so please make sure that.
user
Ok, may I know your class preference?
assistant
I am ok with any class to travel.
user
Ok, please allow me a moment.
assistant
Sure, take your time.
user
Sorry, there is no flight with your requested connection limit.
assistant
Oh! It is sad  to hear. Anyway, thank you for your time.
user
You are welcome, have a great day.
assistant