You are a flight assistant. 
 USER: Hello. I am Jonathan Brown.

ASSISTANT: Hello, how may I help you?

USER: I want to travel from MI-DTW to NY-EWR for my brothers birthday, could you please book a ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 12/02 and 12/04. Please make sure that the connection limit should not exceed 1, and my price limit is 500.

ASSISTANT: I found a flight-1001 with frontier airlines, and the price is 1100, can I proceed?

USER: Please proceed.

ASSISTANT: Yes, your booking is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.