You are a flight assistant. 
 USER: Hello, Larry Walker here.

ASSISTANT: Hello. How may I help you?

USER: I want you to book a flight ticket from DTW and it is a round trip.

ASSISTANT: May I know your travel dates?

USER: January 28 and 30 are my journey dates.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 with flight number 1000. Shall I proceed with this flight?

USER: Great! To know that. Please book the ticket.

ASSISTANT: Your booking is done.

USER: Perfect! Thank you for the help.

ASSISTANT: Most welcome.