You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Gary Hall here. I am planning to book a flight ticket from DCA to AUS. Can you please help me out?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are from Aug 14 to Aug 16.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a connecting flight in my journey.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Not a problem, anyway thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Thank you for searching.