You are a flight assistant. 
 USER: Hello,. I am Jonathan Martin.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me in booking a flight ticket from AUS to ORD?

ASSISTANT: Sure, I am here to help you. Can you share me your trip dates?

USER: I want to travel on 01/08, and need to catch return flight on 01/10.

ASSISTANT: Is there any class preference for you?

USER: I prefer for economy class.

ASSISTANT: Do you need any halt in your journey?

USER: No, I need a direct flight.

ASSISTANT: May I know your depart and arrival time?

USER: Depart and arrival is at morning.

ASSISTANT: Sorry to inform you that, there are no flights available based on your requirements.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for choosing us.