You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Eric Lee here. I would like to visit OAk to meet my best friend, can you help me to book a flight ticket from DTW?

ASSISTANT: Sure, may I know your travel dates?

USER: I am looking to travel on 17 Sep and return on 19 Sep.

ASSISTANT: Do you prefer economy or business class?

USER: I am comfortable with any class.

ASSISTANT: We found a economy flight on your details with airline Southwest, flight number: 1002. Shall I book this ticket?

USER: Ok, proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for reaching us.

ASSISTANT: Thank you.