You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ryan Evans.

ASSISTANT: How may I assist you now?

USER: I am looking for a flight from DCA to DTW, can you help me in booking flight ticket?

ASSISTANT: Ryan Evans, may I know your travelling dates?

USER: My trip dates are from Nov 22 till Nov 24th.

ASSISTANT: Do you have any requirements?

USER: I need a direct flight.

ASSISTANT: Sorry to say, there are no direct flights available for your journey.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing our airlines. Have a nice day.