You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I need to travel from DCA to IAH, can you help me?

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

USER: My trip dates are June 12 to 14.

ASSISTANT: Do you prefer break in between your journey?

USER: I need a single connecting flight.

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

USER: I prefer economy class.

ASSISTANT: May I know your good name please?

USER: Melissa Nelson here.

ASSISTANT: AA 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-1020, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.