You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Christopher Thomas.

ASSISTANT: Yes, Christopher.

USER: I have to attend a marriage party in Washington, can you please book a flight ticket from JFK to DCA?

ASSISTANT: Sure, may I know your trip dates please?

USER: My travelling dates are 11/19 and 11/21.

ASSISTANT: Ok, please give me a moment.

USER: I want 0 connection flight.

ASSISTANT: Christopher, there is no flight available with 0 connection.

USER: It's ok. don't book this flight ticket. Thank you for your information.

ASSISTANT: Ok,. Thank you for reaching us.