You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I am Richard Evans, can you help me in booking a connecting flight which can returns to my location Washington in the morning?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: Thank you for considering my request. My planned dates of journey are Aug 19 and Aug 21.

ASSISTANT: Can you please provide respective airport codes of your journey?

USER: Sure, my source and destination airport codes are DCA and LGA respectively.

ASSISTANT: Do you have any other requirements about your journey?

USER: I need a flight which departures in the evening.

ASSISTANT: Sorry to say this Richard Evans, there are no flights which travels to your region as per your requirements.

USER: Not a problem, I will go by road trip to complete my trip. Anyways thank you for the information.

ASSISTANT: You are welcome, thank you for reaching us.