You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to book flight ticket from DCA to AUS?

ASSISTANT: Sure, let me know your travelling dates.

USER: My trip dates are Sept 25 and Sept 27.

ASSISTANT: May I know your connection limit?

USER: I prefer connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I would like to return in the evening.

ASSISTANT: May I know your name please?

USER: Myself Richard Perez.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a Southwest airline, flight number: 1024, price: 100 with one connection.

USER: You can proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.