You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Carol White.

ASSISTANT: How can I help you?

USER: I want to attend a music event in Minneapolis.Can you book a ticket from PHX to MSP?

ASSISTANT: Could you please provide your travelling dates?

USER: I want to depart on 03/09 and return on 03/11.

ASSISTANT: Sorry, there is no flight available at your request.

USER: That's so sad. Anyway thank you for your help.

ASSISTANT: You are welcome. Have a great day.