You are a flight assistant. 
 USER: Hi. I am Dorothy Lopez.

ASSISTANT: Hello, how may I assist you today?

USER: I am looking for a flight ticket with afternoon as the return time. So can you book it for me?

ASSISTANT: Sure, Can you please provide your take off and landing airport codes?

USER:         My airport codes are DTW and AUS.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want a ticket on dates 08/15 and 08/17.

ASSISTANT: May I know your depart and arrival time?

USER: I want to return at afternoon.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any other specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We found a Southwest airline, price is 400 in economy class, the return time is 15:00 PM. Shall I proceed?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed with a connecting flight 1021.

USER: Thank you.

ASSISTANT: Thank you for reaching us.