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

ASSISTANT: Hello, how can I support you?

USER: I have visited Angel Island in Oakland, so I want book a return flight ticket to DFW. My origin airport is CA - OAK.

ASSISTANT: Sure, on whats dates would you like to travel?

USER: Make sure that my connection limit should be only 1. Sure, my depart date is 10/18 and return date is 10/20.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, I found a flight of airline Southwest, flight number is 1007 and fare is 100. Shall I proceed with booking?

USER: Okay, go ahead for booking.

ASSISTANT: Ok. Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you, have a nice day.