You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me to book a flight ticket from DTW to AUS?

ASSISTANT: Sure, may I know your planned trip dates please?

USER: Sept, 9 and Sept, 11 are my trip dates.

ASSISTANT: Can I have your name please?

USER: Stephanie Carter here.

ASSISTANT: Do you need a connecting flight?

USER: Yes.

ASSISTANT: Do you have any other specifications?

USER: I need to travel in business class and my return time should be at afternoon.

ASSISTANT: Stephanie Carter, no flights has been found on your planned travel dates.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.