You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Help me in booking a flight from AUS to LGA?

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

USER: I like to travel on June 24 to 26.

ASSISTANT: May I know your connection limit?

USER: I prefer connection flight.

ASSISTANT: May I know your name?

USER: I am Helen Green.

ASSISTANT: Can I know your other specifications?

USER: No.

ASSISTANT: There are no flights available on your travelling dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.