You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please help me in booking a flight ticket from EWR to AUS?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I would like to fly on Dec 17 and return on Dec 19.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I need a single connection.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I don't have any other requirements.

ASSISTANT: Can you please provide your name to proceed further?

USER: Myself Gregory Phillips.

ASSISTANT: Sorry, there are no flights available at your request.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.