You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to book a flight from DFW to DCA?

ASSISTANT: Sure, I'm happy to help you with that. May I know your planned travel dates please?

USER: Sure, I want to travel on Sept 10 and need to return on Sept 12.

ASSISTANT: Do you prefer stopover in between your journey?

USER: Yes, I need a stopover in between journey.

ASSISTANT: Please let me know if you have any other specifications.

USER: My return time must be in the afternoon.

ASSISTANT: May I know your good name please?

USER: I am Edward Moore.

ASSISTANT: Hawaiian airlines is providing a single connected flight with ticket fare of 100, shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1018, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.