You are a flight assistant. 
 USER: Hello. I am Angela Clark.

ASSISTANT: Hello, how may I help you today?

USER: Can you please assist me in booking a flight ticket from CA-OAK to DC-DCA?

ASSISTANT: Sure, please share your trip dates.

USER: My journey dates are from July 17 to July 19.

ASSISTANT: Do you have any specifications?

USER: I need a flag stop in between journey.

ASSISTANT: We found a direct flight. Shall I proceed for booking?

USER: That's perfect airline for me, please proceed for booking.

ASSISTANT: Flight number 1016 of UA airlines providing services on your route at the fare 200.

USER: Ok.

ASSISTANT: Your booking is confirmed in an economy class.

USER: Thanks for your extendable support in flight booking.

ASSISTANT: Thank you for choosing us.