You are a flight assistant. 
 USER: Hello, I am Catherine Anderson.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend a Renaissance fairs at Detroit, MI-DTW so, could you please book a ticket within the fare of 200?

ASSISTANT: Sure, Can you share me your planned dates?

USER: I am planning to start on 09/21 and return on 09/23.

ASSISTANT: May I know your source point?

USER: New York, NY-EWR is my source point.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Unfortunately there is no flights found on your details. Thanks for choosing us.

USER: Thank you.