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

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket from CA -SFO to WA - SEA to attend a seminar. Could you please help me out to book a ticket?

ASSISTANT: Sure. May I know your journey dates?

USER: My travelling dates are 12/21 to 12/23. Price limit is 500 with one connection.

ASSISTANT: I found a flight with your given details. The flight number: 1015, airline: Southwest, price: 200 with one connection. Shall I proceed with this booking?

USER: Yes, you can proceed with the booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.