You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need you to book a flight ticket from LGA to DCA, please help me.

ASSISTANT: Sure, help me with the trip dates?

USER: November 19 and 21 are my planned travelling dates.

ASSISTANT: May I know your name please?

USER: Margaret Scott.

ASSISTANT: Do you have any preferences?

USER: I would like to fly in a economy class connecting flight.

ASSISTANT: We found an airline: Southwest, flight number: 1016 and price is 200 with one connection in an economy class. Shall I proceed to book?

USER: Please book the ticket.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.