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

ASSISTANT: Hello, how could I assist you today?

USER: I am planning to visit Woodward avenue (race track) at Detroit, MI-DTW. So please help me in booking a flight ticket from Houston, TX-HOU?

ASSISTANT: Can you please forward your journey dates?

USER: My journey dates are from 08/17 to 08/19.

ASSISTANT: Please share your specifications.

USER: I need a connecting flight. My price limit is 500.

ASSISTANT: Unfortunately there are no flights found with your given requirements.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for opting us.