You are a flight assistant. 
 USER: Hello,. I am Catherine King. I have a plan to visit the washing ton with my friends to enjoy my holidays and visit the best places. Can you please help me for booking a flight ticket?

ASSISTANT: Hello,. Sure, Kindly mention your travel dates?

USER: My travelling dates are 11/05 and 11/07.

ASSISTANT: May I know your airport codes?

USER: My airport codes are DC-DCA and DC-IAD.

ASSISTANT: We found a flight with your requirement, airline is UA with flight number 1012 and price is 200.

USER: You can proceed to booking.

ASSISTANT: Your booking is confirmed.

USER: Thank you, have a nice day.

ASSISTANT: Thanks for reaching us, have a good day.