You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I need to change my reservation due to my planned event got postponed. So please help me with changing my reservation.

ASSISTANT: Sure, could I have your name please?

USER: Thank you.  Myself Jerry Perez.

ASSISTANT: Ok, I have found your reservation. May I know your trip dates?

USER: That is great. I have planned my travel dates as Apr 23 and Apr 25.

ASSISTANT: Ok, could you please tell us your location airport codes?

USER: Sure, DFW and MCO are the required airport codes.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I am looking for direct flight so please make sure that.

ASSISTANT: Ok, may I know your class preference?

USER: I am ok with any class to travel.

ASSISTANT: Ok, please allow me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no flight with your requested connection limit.

USER: Oh! It is sad  to hear. Anyway, thank you for your time.

ASSISTANT: You are welcome, have a great day.