You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi. How can I help you?

USER: I am planning to attend a transportation festival at Austin, so can you please make a reservation on 03/22?

ASSISTANT: Sure, Can I know your travelling airport codes?

USER: My boarding is Washington, DC-IAD and landin at Austin, TX-AUS.

ASSISTANT: May I know your name?

USER: My name is Kevin Lee.

ASSISTANT: When do you like to return?

USER: I would like to return on 03/25.

ASSISTANT: We found a Southwest airline, flight number:1025 and the price is 100.

USER: Please confirm my booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.