You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Could you please help me to book a flight ticket from AUS to CLT?

ASSISTANT: Please provide your journey dates.

USER: I want to travel on Oct 17 and return on Oct 19.

ASSISTANT: Do you need any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I want to return in the evening.

ASSISTANT: May I know your name?

USER: I am Carolyn Perez.

ASSISTANT: There are no flights available on your routes.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.