You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: Sandra Adams here. Can you book a ticket from DTW to DEN?

ASSISTANT: Can I know your preferable dates of travel?

USER: Sure, here are my preferred travel dates 07/28 and 07/30.

ASSISTANT: I found a flight 1023 of Spirit airlines matches with your preferences, can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you, have a good day.