You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michael Smith.

ASSISTANT: How may I guide you today?

USER: I am planning to book a ticket from AUS to ORD. Can you please help me out?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable travelling dates?

USER: I am planning to travel on Nov 27 and return back on Nov 29.

ASSISTANT: Do you have any other specifications?

USER: Yes, I am looking for a direct flight.

ASSISTANT: Please hold on a moment to check the flights.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: That's fine, thank you for your service.