You are a flight assistant. 
 USER: Hello.

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

USER: I am Jennifer Lopez. I am planning to book a ticket to attend a meeting at ATL. Can you please help me out from DCA?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I am planning to travel on Aug 20 and return back on Aug 22.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for contacting us, have a nice day.