You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Gary Jones. I want to book a ticket from DTW to SFO, can you help me?

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

USER: My travel dates are 09/13 and 09/15.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Can you please share your depart time and return time?

USER: I want to return in the afternoon.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: We found a Southwest airline, flight number: 1015, return time: 18:00PM, price: 200 with one connection.

USER: You can book it.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you.