You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Matthew White. Can you please book a flight ticket from DTW to MSP?

ASSISTANT: How can I help you at this moment?

USER: Please book a flight ticket.

ASSISTANT: Sure, I will help you with this. Can you please provide your journey dates?

USER: Sure, I need to travel on dates of 10/20 and 10/22.

ASSISTANT: Wait a moment please.

USER: Sure, take your time.

ASSISTANT: Matthew White, there are no flight services available on this route on your provided dates.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for contacting us.