You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: I want to attend for a conference with my clients in EWR. Can you please aid me for booking a flight ticket from DCA?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My preferred dates are on Oct 20 and 22.

ASSISTANT: Do you have any other specifications?

USER: I need a flight in an economy class.

ASSISTANT: Please help me with your name for booking..

USER: Gary Parker is my name.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 with flight number 1020. Shall I proceed with this flight?

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Most welcome.