You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Turner.

ASSISTANT: How may I assist you?

USER: I am planning visit Washington DCA from Detroit DTW. Can you find a flight ticket for me?

ASSISTANT: Sure, can you please share your planned travel dates?

USER: Ok, my journey dates are on Feb 19 and return on Feb 21.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a single connecting flight to travel.

ASSISTANT: May I know your departure and arrival timings?

USER: Yes, I want to departing in the evening time and returning in the evening time.

ASSISTANT: Do you have any other requirements?

USER: No, I don't have any other requirements.

ASSISTANT: Michelle Turner, no flights has been found on your requirements.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.