You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to meet my family at Washington, please help me in booking a ticket from DFW to DCA.

ASSISTANT: Sure, let me know your travelling dates?

USER: My planned travel dates are on Sept 02 and Sept 04.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your departure and arrival timings?

USER: I would like to depart in the evening.

ASSISTANT: Do you have any other preferences?

USER: No more preferences.

ASSISTANT: Can you please share your good name?

USER: My name is Catherine Green.

ASSISTANT: Thanks for your details, we found a connecting flight 1012 in Delta airline with fare 100 and class is economy. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us, have a safe journey.