You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Justin Wilson. Can you book a flight ticket from IAD to AUS?

ASSISTANT: Sure. Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Let me know your trip dates.

USER: My trip dates are from 11/16 to 11/18.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found on your given requirements.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for approaching us.