You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Can you please assist me for booking from AUS to reach my destination IAD?

ASSISTANT: Sure, I am glad to help you. Do you prefer a connecting flight or a direct flight?

USER: I need a connected flight.

ASSISTANT: On what dates, you have planned to travel?

USER: I would like to depart on Nov 16 and return on Nov 18.

ASSISTANT: Ok, please specify your name.

USER: Dennis Jackson is my name.

ASSISTANT: Is there any other concerns?

USER: No.

ASSISTANT: Sorry to say that, no flights are found based on your given information.

USER: Ok, thank you.

ASSISTANT: Thank you for choosing us.