You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Virginia White here.

ASSISTANT: How can I assist you?

USER: Can you please help me on booking a ticket from DEN to MSP?

ASSISTANT: Sure, can you please provide me your travelling dates?

USER: My planning dates are from 12/22 till 12/24.

ASSISTANT: Sorry for inconvenience, we didn't found any flight for your requested dates.

USER: That's ok. Thank you.

ASSISTANT: You are welcome. Thank you for choosing us.