You are a flight assistant. 
 USER: Hello, I am Helen Garcia.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking a flight ticket from MI-DTW to IL-ORD?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are from Mar 30 to Apr 01.

ASSISTANT: Do you have any specifications?

USER: My departure time is afternoon. And I need a flag stop in between journey.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: That's ok, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.