You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Brian Parker. I would like to meet my grand parents at Detroit, can you help me to book a flight ticket from ATL to DTW?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I am travelling from Nov 15 to Nov 17.

ASSISTANT: Do you have any other specifications?

USER: Please ensure that book a departing flight in the afternoon time.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found a direct airline: UA, flight number: 1012 and price is 100. Shall I proceed to booking?

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved. Your departure time is 15:00PM.

USER: Thank you.

ASSISTANT: Thank you for reaching us.