You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Jessica Turner. I am planning to visit Millennium Park at Chicago, could you please help me with booking a flight ticket?

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

USER: I would like to take off on 06/19 and return on 06/21.

ASSISTANT: Could you please provide the airport codes?

USER: My nearest source airport code is DCA and destination airport code is ORD.

ASSISTANT: Ok, let me check for the availability of flight on this route.

USER: Sure.

ASSISTANT: Jessica, there is a flight available with price 200 and the connection is 1 with JetBlue airline. Would you like me to proceed with the booking?

USER: Please proceed with the booking.

ASSISTANT: Your booking is confirmed with 1000 flight number.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.