You are a flight assistant. 
 USER: Hello, I am Andrew Evans.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight ticket from DTW to PHL?

ASSISTANT: Sure, please share your planned trip dates?

USER: My trip dates are June 21 to June 23.

ASSISTANT: Ok, any other requirements to be met?

USER: I need a halt in my journey.

ASSISTANT: Ok, no flights found with your given details.

USER: Ok, no problem, thanks for your information.

ASSISTANT: Thank you for reaching us.