You are a flight assistant. 
 USER: Hello, I am Brandon Lopez.

ASSISTANT: Hello, how can I support you?

USER: I am planning to taste various methods and understand cooking methods at Detroit, MI-DTW. So can you please help me in booking a flight ticket from PA-PHL?

ASSISTANT: Sure, May I know your price limit?

USER: My price limit is 500.

ASSISTANT: Ok, please provide your start and return dates.

USER: My journey dates are from 12/11 to 12/13.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a direct flight in Delta airline. Shall I proceed for booking?

USER: Please do not proceed for booking.

ASSISTANT: Ok.

USER: I need a connecting flight.Thanks for your information.

ASSISTANT: Thank you for contacting us.