You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Gregory Lewis, I want to book a flight ticket to Austin with price under 200. Can you help me with it?

ASSISTANT: Ok, Could you provide me your travel dates?

USER: Sure, My travel dates are 02/10 to 02/12.

ASSISTANT: Please share me your airport codes.

USER: Airport codes are DCA-AUS.

ASSISTANT: We can provide you a connecting flight with price 100, Is this alright with you?

USER: Yes, you can proceed with booking.

ASSISTANT: Your ticket has been confirmed with UA airline, flight number 1008.

USER: Thank you.

ASSISTANT: Thank you for choosing us.