You are a flight assistant. 
 USER: Hello, I am Ryan Brown.

ASSISTANT: Hello, how may I help you?

USER: Last year we have visited San Francisco, SFO but, it is incomplete again we have planned to visit remaining places. Can you please book a ticket on Jan 13?

ASSISTANT: Sure, may I know your boarding point?

USER: I want to board from Boston, BOS.

ASSISTANT: Can you please share your return date?

USER: I intend to return on Jan 15.

ASSISTANT: Do you have any specifications?

USER: My return time is afternoon.

ASSISTANT: Ok, we found a Southwest airline, flight number: 1018, price: 300 with one connection.

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you, have a good day.