You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Please help me to book a flight ticket from MSP to DTW.

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are from Sept, 18 to Sept, 20.

ASSISTANT: Do you have any specifications?

USER: I need a single connecting flight and I prefer to depart in the evening.

ASSISTANT: May I know your name?

USER: Steven Green.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: We found an airline AA with flight 1022 having a fare 100 with direct flight and your depart time is in the evening. Shall I proceed with booking?

USER: Please proceed for booking.

ASSISTANT: Your booking has been processed.

USER: Thank you.

ASSISTANT: Thank you.