You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you now?

USER: Can you please help me in changing my existing reservation to Orlando? As my meeting got postponed at Orlando.

ASSISTANT: Ok, may I know your good name to check with availability?

USER: My previous reservation has done with the name John Campbell.

ASSISTANT: I found your reservation, may I know your new airport codes?

USER: My airport codes of journey are from ATL to MCO.

ASSISTANT: When are you planning to travel for this journey?

USER: My preferable journey dates are Nov 17 and Nov 19.

ASSISTANT: Do you need a connecting flight?

USER: I prefer connecting flight.

ASSISTANT: Any other requirements from your side?

USER: I would like to return in the afternoon flight.

ASSISTANT: Sorry, there are no flights available currently with 1 connection.

USER: Ok, not an issue. Thank you for your service.

ASSISTANT: Thank you for choosing our services. Have a nice day.