You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Please help me to book a flight ticket from DTW to ORD.

ASSISTANT: Sure, can you please share your journey dates?

USER: My journey dates are from Sept, 18 to Sept, 20.

ASSISTANT: Are you looking for any preferred connections?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other specifications to be met?

USER: I prefer an economy class to fly.

ASSISTANT: Can I have your name to proceed further?

USER: Mark Smith.

ASSISTANT: We found a Spirit airlines, flight number-1027 connections-1 class-economy and fare is 200. Shall I proceed with the booking?

USER: Please proceed.

ASSISTANT: Sure, your reservation has been done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.