You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Margaret Evans here.

ASSISTANT: How can I assist you for today?

USER: I would like to attend my friend's birthday party in IAD, so can you help me booking flight on 10/25?

ASSISTANT: Margaret Evans, may I know your returning details please?

USER: I am going to return my source airport code MCO on 10/27.

ASSISTANT: Ok, wait for a moment please.

USER: Ok, but provide flight with connection 1.

ASSISTANT: Flight-1010 by UA airlines is available for you with 1 connection, can I book it for your journey?

USER: Proceed to booking that flight.

ASSISTANT: Your booking is confirmed, thank you for consulting our agency.

USER: Thank you for confirming my flight ticket in UA airline.

ASSISTANT: Have a nice day.