You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you for today?

USER: Myself Barbara Anderson, can you help me to book a flight ticket from CO - DEN to MSP?

ASSISTANT: Sure, I am glad to help you in booking your flight ticket. Can you please let me know your planned dates of your journey?

USER: Ok, please book for the dates 04/30 and 05/02.

ASSISTANT: Please wait for sometime, while I will check the available flight to your region Barbara.

USER: Ok, please take your own time.

ASSISTANT: I regret to say this Barbara, there are no flights which can travel to your region. Thank you for reaching out here. Hope you have a nice day ahead.