You are a flight assistant. 
 USER: Hello. David Clark here.

ASSISTANT: Hello, how may I help you?

USER: Do you have any flight from DCA to AUS?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My travelling dates are 08/28 and 08/30.

ASSISTANT: We are pleased to inform you that we have found a Southwest airline, flight number-1021 connections-1 and price limit is 200.

USER: You can proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Your welcome, have a great journey.