You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a flight ticket from AUS to LGA?

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

USER: Apr, 20 and Apr, 22 are my planned travel dates.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I am looking for connecting flight.

ASSISTANT: May I know your good name please?

USER: Virginia Harris here.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.