You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Joseph Taylor here. I want to travel from AUS to MSP for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, when would you like to travel?

USER: My travelling dates are from 11/23 to 11/25.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for consulting us, have a great day.