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 DCA to EWR?

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

USER: I would like to start on Oct 13th and will return back on Oct 15th.

ASSISTANT: Can I have your good name please?

USER: My name is George Collins.

ASSISTANT: May I know your class and airline preference please?

USER: I am fine with any class.

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

USER: I want a direct flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Southwest airlines is providing a direct flight on that route with ticket fare of 100, it's departure time is 14 PM and return time is 11 AM. Shall I proceed for booking?

USER: Please proceed with the 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.