You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: My name is Jack Moore, I want to book a flight ticket within a price limit of 200 to celebrate my birthday in Detroit.

ASSISTANT: Sure. Please specify your travel dates?

USER: I will start on 07/01, return on 07/03.

ASSISTANT: Help me with your airport codes?

USER: My source and destination airport codes are NY - EWR, MI - DTW.

ASSISTANT: We found a Spirit airline with flight 1004 having a connection.

USER: You can proceed to booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for opting us.