You are a flight assistant. 
 USER: Hi. Margaret Perez here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book a ticket from DTW to IAD?

ASSISTANT: Sure, can I know your preferable dates?

USER: Ok, here are my preferred travel dates 11/23 and 11/25.

ASSISTANT: I found a flight 1012 of Spirit airlines matches with your preferences, can I proceed?

USER: Please go ahead.

ASSISTANT: Your ticket is booked. Thank you.

USER: Thank you for the help.