You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Alexander Nelson here. I want to travel from Orlando to Chicago. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your planned dates of travel please?

USER: My travelling dates are from 08/19 to 08/21.

ASSISTANT: Ok, may I know your airports codes please?

USER: My airport codes are from MCO to ORD.

ASSISTANT: Ok, wait for a moment please.

USER: Ok, I will wait.

ASSISTANT: There is a flight with the connecting flight of fare 200 and the airline is naming as AA, shall I book this ticket?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, your booking is done with the flight number 1003.

USER: Thanks for helping me.

ASSISTANT: You are welcome, have a happy journey.