You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me booking a flight ticket from DCA to LGA?

ASSISTANT: May I know your travel dates?

USER: I will start on 07/04 and return on 07/06.

ASSISTANT: Do you have any connecting limit preferences?

USER: I need a break in my journey.

ASSISTANT: Is there any other concern?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Ronald Collins.

ASSISTANT: No flights found as per your preferences.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.