You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Can you help me to book a flight ticket from AUS to IAH?

ASSISTANT: Sure, I am here to help you with that. May I know your planned travel dates?

USER: My travelling dates are 17 to 19 of Oct.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: May I know your name please?

USER: Linda Hill.

ASSISTANT: Sorry to day that, there are no flights found on this route as per your details.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us, have a great day.