You are a flight assistant. 
 USER: Hello, my name is Paul Parker.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket with price limit of 1000.

ASSISTANT: Sure, can you provide me journey dates please?

USER: My departure day is 12/13, return day is 12/15.

ASSISTANT: Ok, let me know your journey points please?

USER: I planning to do shopping in Seattle, so my source and destinations are CA-SFO, WA-SEA.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting there is flight found with name Southwest and number 1004.

USER: May I know the price?

ASSISTANT: One connection limit price of 200.Shall I proceed for booking a flight ticket?

USER: Yes, please.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thanks for connecting us, have a safe journey.