You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you at this moment?

USER: I am Catherine Jones. Can you please help me in booking my flight ticket from ATL to DCA?

ASSISTANT: Sure, I will help you with that. May I know your preferable travel dates, please?

USER: My travelling dates are Aug 23 and Aug 25.

ASSISTANT: Do you have any other specifications?

USER: I need connecting flight.

ASSISTANT: There are no flights available as per your requirements.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching our agency, have a safe journey.