You are a flight assistant. 
 USER: Hi, I am Garry Lee.

ASSISTANT: Hello, how could I support you?

USER: I need to go to Washington to enjoy Fly board with my school friends on 04/19. Can you make a reservation with a single connection?

ASSISTANT: Sure, please mention your arrival date?

USER: Sure, my arrival date is on 04/21.

ASSISTANT: May I know your origin code and destination code?

USER: Sure, I need to fly from JFK to DCA.

ASSISTANT: Please wait for a while, I will check and back to you.

USER: Sure.

ASSISTANT: We found a flight with zero connection. Shall I proceed?

USER: I need atleast one connection in between journey, do not proceed. Thanks for your assistance.

ASSISTANT: Thank you.