You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brandon Phillips here.

ASSISTANT: How may I help you at this moment?

USER: I want to attend a Seminar in New York. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am here to help you with that. May I know your airport codes?

USER: My airport codes are AUS and EWR.

ASSISTANT: Ok, can I have your travelling dates?

USER: My travelling dates are 02/14 and 02/16.

ASSISTANT: Do you have any other specifications?

USER: I want to return on evening time.

ASSISTANT: Ok, wait for a minute.

USER: Ok, I will wait.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for approaching us.