You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Karen Hill. Could you please book a flight ticket from MI-DTW to TX-HOU?

ASSISTANT: Sure Karen, can I know the dates of the flight?

USER: My departure day is 01/09 and return day is 01/11.

ASSISTANT: Hold on for a moment.

USER: Ok.

ASSISTANT: Spirit airlines flight 1017 matches with your criteria, can I book the ticket?

USER: Please book this flight ticket.

ASSISTANT: Karen, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you, have a good day.