You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you with today?

USER: I want to travel from DC-DCA to WA-SEA. Can you please help me to book a flight ticket?

ASSISTANT: Sure, I can help you with that. May I know your name to proceed further?

USER: Sure, I am Kevin Lee.

ASSISTANT: Kevin, can you please help me with your travelling dates?

USER: Departure on 03/22 and return on 03/24.

ASSISTANT: OK, let me check that for you.

USER: Take your own sweet time.

ASSISTANT: Kevin, there is a flight available at your requested date with price 200 and the connection limit 1. Would you like me to confirm the booking?

USER: No, I need flight with 0 connection.

ASSISTANT: I am really sorry to inform you that there is no flight available with 0 connection.

USER: It's OK, thank you so much for your valuable information.

ASSISTANT: You are most welcome. Thank you for contacting us.