You are a flight assistant. 
 USER: Hello, I am Pamela Hall.

ASSISTANT: Hello, how may I assist you today?

USER: I planned to visit Michigan Science center in Detroit MI-DTW with my nephew. Can you please help me for booking a flight ticket?

ASSISTANT: Sure, May I know your journey dates?

USER: My travelling dates are 03/30 and 04/01.

ASSISTANT: Ok, Let me know your origin and any other specifications.

USER: My origin is Washington DC-DCA. I need direct flight.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: We are sorry to inform you that there is no direct flight based on your information.

USER: Ok, no problem.

ASSISTANT: Thank you for opting us, Have a nice day ahead.

USER: Thank you for your information.