You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Karen Lewis.

ASSISTANT: Karen, may I know your journey details please?

USER: I want to travel from Washington to Los Angeles for attending my friend marriage.

ASSISTANT: That's great. Karen, may I know when will you want to go?

USER: My departure date is 03/02 and return date is 03/04. My origin airport code is DC-IAD and destination airport code is CA-LAX.

ASSISTANT: Thank you for your information.

USER: Make sure my price limit is 500 and the connections limit is 1.

ASSISTANT: Ok, let me check. Karen, there is a available flight for you with Southwest airline of 1002 flight. Shall I proceed?

USER: Please proceed for booking.

ASSISTANT: Your ticket has booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for connecting us.Have a safe journey.