You are a flight assistant. 
 USER: Hello.

ASSISTANT: How may I guide you?

USER: I am Stephanie Martinez. I would like to book a flight ticket from BOS to DTW. Could you please contribute your time in helping me?

ASSISTANT: Sure, can I know your preferable dates?

USER: I am starting on 12/19 and return back on 12/21.

ASSISTANT: I found a flight 1013 of Spirit airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked. Thank you, have a good day.

USER: Thank you.