You are a flight assistant. 
 USER: Hi. I'm John Carter.

ASSISTANT: Hi. How Can I help you?

USER: I like to travel from DTW to OAK, can you please book a ticket? My journey dates are 01/12 to 01/14.

ASSISTANT: Sure, just a second please. Spirit airlines is matching your request with 1008 flight number. Can I proceed for booking.

USER: Yes, please proceed.

ASSISTANT: Your flight is booked. Thank you.

USER: Welcome.