You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am planning to visit New York, will you help me in booking the flight ticket from AUS to EWR?

ASSISTANT: Yes. Tell me your travel dates please?

USER: My preferable journey dates are Apr 15 and Apr 17.

ASSISTANT: May I know your name please?

USER: Myself Christopher Anderson.

ASSISTANT: Are you looking for a stopover in your journey?

USER: I need a flight with single connection.

ASSISTANT: Any other preferences?

USER: No, thank you for asking.

ASSISTANT: Thanks for your time. I could not find any flights matching your flight details.

USER: Ok, not an issue.

ASSISTANT: Thank you.

USER: Thank you for your information.