You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you aid me in booking a flight ticket from DTW to AUS?

ASSISTANT: Sure, we are happy to help you. Can you please let me know travelling dates?

USER: I am planning to start on Jan 20th and return back on Jan 22nd.

ASSISTANT: Do you have any break in between journey?

USER: Make sure that connection limit is 1 and I prefer to travel in business class.

ASSISTANT: Is there any other specifications for you?

USER: No, all preferences have been mentioned.

ASSISTANT: Can I have your good name?

USER: I am Jack Jones.

ASSISTANT: We are regret to inform you that, no flights are available on your journey routes.

USER: No issues. Thank you for checking.