You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am planning to visit Washington, can you please book me a ticket from DFW to DCA?

ASSISTANT: Sure, can you please share your travel dates?

USER: My preferable journey dates are Dec 27 and Dec 29.

ASSISTANT: May I know your connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: Do you have any other specification that you are looking for?

USER: I prefer to return in evening flight.

ASSISTANT: May I know your name to proceed further?

USER: My name is Richard White.

ASSISTANT: There is a flight available with price 300 and the connection is 1 with JetBlue airline. Would you like me to proceed with the booking?

USER: Please proceed to book my ticket in this flight.

ASSISTANT: Your booking is confirmed with 1000 flight number and the departure time is 21:00 hours, return time is 2:00 hours.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for contacting us.