You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a ticket from AUS to ORD to seminar, can you help me in booking?

ASSISTANT: Sure, please share me your trip dates.

USER: I am departing on Jan 02 and return on Jan 04.

ASSISTANT:  Do you need direct flight or connecting flight?

USER: I prefer a flight with connection limit 1  which depart in evening time.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Brandon King.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

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

ASSISTANT: Thank you for reaching us.