You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Frank Thomas. I want to travel from TA-AUS to DC-IAD.

ASSISTANT: OK. May I know your travelling dates?

USER: My depart is on 09/1 and arrival is on 09/3 with price limit 500.

ASSISTANT: OK. Let me check what flights are available for you.

USER: OK.

ASSISTANT: Thanks for your time. We found a Hawaiian airline with flight number 1007 and price of 100 matching your specifications. Shall I book your ticket?

USER: you can proceed with booking.

ASSISTANT: Sure. Your booking has been processed.

USER: Thank you.