You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Helen Robinson here.

ASSISTANT: How can I aid you?

USER: Can you book a connecting flight to Austin for my business trip?

ASSISTANT: Sure. Can I know your travelling dates?

USER: My travelling dates for journey are 08/02 to 08/04.

ASSISTANT: Please share me your airport codes.

USER: My airport codes for boarding the flight are ORD to AUS. I need a connecting flight.

ASSISTANT: We found a Southwest airline, flight number:1004 and the price is 100.

USER: My price limit is less than 200. Sure, you can book it.

ASSISTANT: Your  flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you.