You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ronald Jackson.

ASSISTANT: How may I assist you?

USER: Please book a flight ticket from Las Vegas, LAS to Detroit, DTW.

ASSISTANT: Sure, can I have your trip dates?

USER: My travelling dates are from 01/19 to 01/21.

ASSISTANT: We found a flight in an airline Spirit with 1007 number having a single connection price of 200. Shall I proceed to book?

USER: Ok, proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.