You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Please book a flight ticket from AUS to ORD.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are 11/24 and 11/26.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: Mary Smith.

ASSISTANT: Sorry, there are no flights available on your request.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.