You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you now?

USER: I am Raymond Smith, I am travelling to Denver to visit my father who work at there, can you book a flight on 02/22?

ASSISTANT: Sure, may I know your airport codes?

USER: My source point is Seattle,WA-SEA and destination point is CO-DEN.

ASSISTANT: When do you planned your return date?

USER: I planned to return on 02/24.

ASSISTANT: Do you have any other specifications?

USER: I need a flight with a halt. My budget for flight ticket is 200.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We are glad to notify that there is a flight found with Southwest airline of flight number 1020 and fare is 100. Shall I proceed for booking?

USER: Sure, you can proceed.

ASSISTANT: Your ticket has been processed.

USER: Thank you for helping me.

ASSISTANT: Thanks for choosing us and have a nice journey.