You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Ashley Miller here. I am planning to travel MSP from AUS, can you help em in booking a ticket?

ASSISTANT: Sure, can you please share your preferable travel dates?

USER: My planning dates are from 02/20 to 02/22.

ASSISTANT: Ok, let me check for the availability of flight on this route.

USER: Sure.

ASSISTANT: Ashley, I am sorry to inform you that there is no flight available at your requested dates.

USER: That's fine. Anyway, thank you for your help.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.