You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in booking my flight ticket from DCA to LAX?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: My travelling dates are Apr 27 and Apr 29.

ASSISTANT: Do you need break in between your journey?

USER: I need connecting flight.

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

USER: I prefer normal cost airline.

ASSISTANT: Can I have your good name please?

USER: Myself Robert Gonzalez.

ASSISTANT: Delta airlines is providing a single connected flight with ticket fare of 300, shall I proceed for booking?

USER: Please proceed with booking.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1006, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.