You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need a connected flight to travel from DTW. Can you please help me for booking to DCA?

ASSISTANT: May I know your trip dates?

USER: My trip dates are on Aug 11 and 13.

ASSISTANT: Do you have any connecting flight preferences?

USER: I need a connected flight.

ASSISTANT: Is there any other concern?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Christopher Rodriguez.

ASSISTANT: No flights found as per your preferences.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for choosing us.