You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me in booking from IAD to AUS, as there is a business meeting to attend?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are Nov 12-14.

ASSISTANT: Do you have any limits on number of connections.

USER: I am looking for a direct flight.

ASSISTANT: May I know your name for the documentation purpose?

USER: I am Kevin Baker.

ASSISTANT: Do you have any another preferences on your journey?

USER: No.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: No issue, thank you.

ASSISTANT: Welcome, thank you for reaching us.