You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I aid you?

USER: As there is sports event, please book a flight to Austin, TX-AUS from Austin, TX-AUS.

ASSISTANT: Sure, May I know your travelling dates?

USER: Depart by 12/21 and return on 12/23.

ASSISTANT: May I know your good name please?

USER: I am Christopher Harris.

ASSISTANT: Do you have any other specifications?

USER: Connections 1. Price limit 500.

ASSISTANT: There is a flight with single connection, Price is 100 and flight number is 1001. Shall I proceed?

USER: May I know airline?

ASSISTANT: Your booking has been confirmed with AA airline.

USER: Thanks.