You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Can you please help me in booking a flight ticket from San Francisco, SFO to Washington, DCA?

ASSISTANT: May I know your journey dates?

USER: My journey dates are from Mar 20 to Mar 22.

ASSISTANT: Is there any connection limit?

USER: I need a flag stop in between journey.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Carolyn Garcia.

ASSISTANT: United Airlines providing connecting flight in the economy class with fare 100, shall I proceed for booking?

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket has been confirmed with flight number 1021.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.