You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Helen Robinson.

ASSISTANT: Helen, how may I assist you today?

USER: I am planning to attend business meeting at New York, can you please help me with booking a flight ticket?

ASSISTANT: Sure, could you please tell me your journey dates?

USER: Sure, I would like to take off on 06/13 and return back on 06/15.

ASSISTANT: Please provide me your travelling airport codes.

USER: My source airport code is AUS and the destination airport code is EWR. Please make sure that the connection limit is 0.

ASSISTANT: Ok, please be on hold for sometime.

USER: Sure.

ASSISTANT: Sorry Helen, there are no direct flights available on your given dates.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you very much for choosing us.

USER: You are welcome.