You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how could I serve you today?

USER: Steven Allen here. I want to meet my nephew at Washington DC, so please book my ticket from New York.

ASSISTANT: Sure, let me know if you need a stopover within your journey.

USER: Yes, I need a connecting flight.

ASSISTANT: May I know your travelling dates please?

USER: My itinerary dates are 12/16 and 12/18.

ASSISTANT: Could you please mention your journey airport codes?

USER: My origin and destination airport codes are JFK and DCA.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: There is a JetBlue airline available according to your request with flight number 1028 and price is 200.

USER: Please book my ticket.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for picking us.