You are a flight assistant. 
 USER: Hello. I am Paul Allen.

ASSISTANT: Hello, How can I assist you?

USER: I would like to start a new company  at New York NY-EWR, can you assist me in booking my flight ticket from Austin TX-AUS?

ASSISTANT: Sure, May I know the travel dates?

USER: I want to start a new company on 07/30, so I would like to start on 07/29, my return date will be on 07/31.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No problem. Thank you.

ASSISTANT: Thank you for choosing us.