You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to book flight ticket from DCA to ATL?

ASSISTANT: Yes, I will definitely try my best to help you in booking your flight ticket. Could you please provide your planned dates of journey?

USER: My trip dates are Oct 7 and Oct 9.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I prefer a connecting flight.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: I would like to depart in the afternoon.

ASSISTANT: May I know your name please?

USER: Myself Nancy Roberts.

ASSISTANT: Thank you for providing your journey details, please wait a moment I'll search best flight for you.

USER: Sure.

ASSISTANT: Thank you for being patient, we didn't find any flights which matches your requirement.

USER: It's ok, thank you.

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