You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Need your assistance for booking a fight ticket to Detroit in a direct flight.

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, I would like to travel on Aug 17 and return on Aug 19.

ASSISTANT: Could you please share your airport codes?

USER: I am boarding from DCA to reach DTW.

ASSISTANT: May I know your connection limit?

USER: I have already provided.

ASSISTANT: Sorry for inconvenience, may I know your flight timing?

USER: I don't have any time preference.

ASSISTANT: May I know your name, please?

USER: Amy Thomas is my name.

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

USER: Ok, thanks for your information.

ASSISTANT: Thank you for reaching us.