You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Barbara Parker. Could you please help me with booking ticket from AUS to IAD?

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

USER: Ok, my trip dates are from Sept 30 to Oct 02.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a connecting flight.

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

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for reaching us.