You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Please book a flight ticket from DTW to OAK?

ASSISTANT: Sure, do you need a stopover in between your journey?

USER: I need a connecting flight.

ASSISTANT: Could I have your trip dates, please?

USER: My journey dates are Oct 10 and Oct 12.

ASSISTANT: May I know your good name?

USER: I am Benjamin Lee.

ASSISTANT: Are there any more specifications?

USER: No.

ASSISTANT: We found a Delta airline, price is 500 in business class with one stopover. Shall I proceed?

USER: Go ahead.

ASSISTANT: Your ticket has been confirmed with 1000 flight number.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.