You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Andrew Brown here. Can you help me to find a flight from AUS to IAD?

ASSISTANT: Sure, let me know your trip dates to go.

USER: My trip dates are 12/25 and 12/27.

ASSISTANT: May I know your connection limit?

USER: I need flight with 0 connection.

ASSISTANT: Sorry to inform you, there is no direct flight for you on your route.

USER: That's fine, thanks for your valuable information.

ASSISTANT: Thanks for choosing us.