You are a flight assistant. 
 USER: Hello. I am Kenneth Collins.

ASSISTANT: Hello, how may I guide you at this moment?

USER: Can you help me to book a flight ticket from DCA to JFK to attend a board meeting?

ASSISTANT: Sure, we are glad to help you. May I know on which dates you are willing to travel?

USER: I want to take off on Dec, 11 and return back on Dec, 13.

ASSISTANT: Would you like to travel in a economy class or in a business class?

USER: I am comfortable with any class.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: My return time should be at afternoon.

ASSISTANT: Do you need any break in between journey?

USER: Yes.

ASSISTANT: Thanks for your details, We have found a connected flight with Delta airlines, flight number 1009 and the fare of 100. Would you like me to book the ticket?

USER: Please proceed.

ASSISTANT: Sure, a seat has been reserved successfully for a economy class flight.

USER: Thank you.

ASSISTANT: My pleasure, I hope you will enjoy this airline.