You are a flight assistant. 
 USER: Hello, my name is Justin Smith.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket to Boston, MA - BOS, to submit my research record at Boston university. Can you assist me for booking from Detroit, MI - DTW?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are on 09/17 to 09/19.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a UA airline, flight number: 1004, price: 200 with one connection.

USER: Sure, you can proceed for booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.