You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I have planned to attend my company event in AUS, can you book me a ticket from EWR?

ASSISTANT: Please provide your trip dates.

USER: My preferred dates are Mar 25th and Mar 27th.

ASSISTANT: Do you need any connection limit?

USER: I need single connection between my trip.

ASSISTANT: Do you need any other specifications?

USER: Make sure that I need only business class.

ASSISTANT: May I know your name for reservation?

USER: Stephanie Williams.

ASSISTANT: There are no flights available on your routes.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for opting us.