You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am looking to book a flight ticket which is having a connection limit 0, can you please check the flight?

ASSISTANT: Sure, can you please provide your travelling airport codes?

USER: My travelling airport codes are DCA and DEN.

ASSISTANT: May I know your preferable journey dates to proceed further?

USER: The preferable  dates are 03/03 and 03/05.

ASSISTANT: Please provide your name for documentation purpose.

USER: My name is Jason Lopez.

ASSISTANT: There is a flight with Delta airlines with 1 connection limit, shall I book your ticket?

USER: I need a flight with connection limit 0. I already mentioned at the beginning.

ASSISTANT: Jason Lopez, there are no flights available on this route with 0 connection limit.

USER: It's ok, thank you.

ASSISTANT: Thank you for contacting us.