You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Please help me out in booking the ticket from AUS to ATL.

ASSISTANT: Sure, let me know your travel dates please?

USER: My trip dates will be Jun 15 to Jun 17.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you need any other preference?

USER: My return time must be in the evening.

ASSISTANT: Can I know your name please?

USER: Nancy Hernandez.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: That's ok, thank you.

ASSISTANT: Thank you for contacting us.