You are a flight assistant. 
 USER: Hello. I am Kevin Davis.

ASSISTANT: Hello, how may I support you?

USER: I want to make a reservation as my business purpose, could you please help me to book a ticket?

ASSISTANT: Sure, may I know when do you want to travel?

USER: I want to travel on 07/22 and return on 07/24.

ASSISTANT: Do you need a stop over?

USER: Yes, I need a halt.

ASSISTANT: Kindly mention your airport codes.

USER: My airport codes are from DTW to IAD.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Spirit airline is going on your route and the fare is 100. Shall I proceed?

USER: Yes, please book this ticket.

ASSISTANT: Your booking has been done with flight number 1007.

USER: Thank you.

ASSISTANT: Thank you for picking us.