You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brian Phillips here.

ASSISTANT: How can I assist you today?

USER: Can you please check for the flights from AUS to ORD?

ASSISTANT: Sure, share me your trip dates.

USER: My journey dates are from Jan 25th to Jan 27th.

ASSISTANT: Do you need any connection limit?

USER: I need a direct flight.

ASSISTANT: Can I know your depart and arrival time?

USER: My return time will be in morning.

ASSISTANT: Do you have any other requirements?

USER: No, thanks for asking.

ASSISTANT: There are no flights available in your routes.

USER: Oh! That's very sad to know form your side. Anyways, thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.