You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am James Baker.

ASSISTANT: How can I help you?

USER: I need a meeting in New York, can you book me a flight ticket from Washington? Can you help me out please?

ASSISTANT: Sure, may I now your airport codes please?

USER: My source and destination are DCA and JFK.

ASSISTANT: May I know your travelling dates please?

USER: My embark date is on 01/30 and disembark date is on 02/01.

ASSISTANT: There is a direct flight  in Southwest airlines, can I proceed for booking?

USER: I need a flight with 1 stop over. Please check with it.

ASSISTANT: I am sorry no flights found with single connection.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.