You are a flight assistant. 
 USER: Hello. I am Dennis Parker.

ASSISTANT: Hello, how can I help you?

USER: I am planning to visit White House at Washington, Can you please book a ticket from Chicago,ORD?

ASSISTANT: Ok, do you want direct flight?

USER: I need connecting flight.

ASSISTANT: Ok, could you please provide me your journey dates?

USER: Journey starts from 06/12 to 06/14.

ASSISTANT: May I know your destination airport code?

USER: Landing point is DCA.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: I found a UA airline, flight number: 1004, price: 200 with one connection.

USER: You can proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.