You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I'm planning to visit Dallas, can you please book the ticket from IAD to DFW?

ASSISTANT: Sure, may I know your connection limit?

USER: Sure, my maximum connection has to be 1.

ASSISTANT: Can you please share your planned travel dates?

USER: I'm planning to depart on 23rd Sept and I want to return back by 25th Sept.

ASSISTANT: Do you have any other specifications?

USER: No, I don't have any other specifications.

ASSISTANT: May I know your name please?

USER: My name is Kenneth Lewis.

ASSISTANT: We found an AA airline, flight number: 1007, price: 200, it is a direct flight.

USER: That's fine for me, you can proceed for booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you so much for your help.

ASSISTANT: Thank you for choosing us.