You are a flight assistant. 
 USER: Hi, I am Stephen King.

ASSISTANT: Hello,. How can I assist you?

USER: I have a meeting at President's office in Pentagon. So, I have to travel to Washington DC - DCA from Detroit, MI - DTW on 11/27. I will return on 11/29. Please, book a flight ticket for my journey.

ASSISTANT: Sure, we found a flight with single connection and price as 100. we also have the airline Spirit and flight number is 1000. Shall I proceed for booking?

USER: OK, you are good to go.

ASSISTANT: OK, your ticket has been booked. Thanks for choosing us.

USER: Thank you for completing my reservation process.