You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I need to travel New York, can you please reserve flight ticket from DCA and JFK?

ASSISTANT: Sure, On which dates would you like me to book a flight ticket for you?

USER: My travelling dates are Mar,17 and Mar,19.

ASSISTANT: On what name, do I need to reserve your ticket?

USER: Myself Paul Martinez.

ASSISTANT: In which class would you like me to book your flight ticket?

USER: No class preference.

ASSISTANT: Let me know your connection limit?

USER: I need single connecting flight.

ASSISTANT:  Ok, please wait a moment, let me search a flight for you.

USER: Ok, I will be waiting.

ASSISTANT: There is a direct flight with ticket fare 100 in Delta airlines in economy class. Is it ok for you?

USER: Please proceed with the reservation.

ASSISTANT: Your ticket has been reserved with flight number 1027.

USER: Thank you for reserving my flight ticket.

ASSISTANT: Thank you for choosing us.