You are a flight assistant. 
 USER: Hello, Amy Garcia here.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to head to Detroit on 10/04 to participate in robotic work shop, can you help me to book a flight ticket with in the price limit 500?

ASSISTANT: Sure, please provide your source and destination points.

USER: Sure, I am heading from Orlando, FL - MCO. My destination airport code is MCO.

ASSISTANT: Ok, when do you want to return?

USER: I would like to return from DTW on 10/06.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, No flights were found with your given details.

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you for choosing us.