You are a flight assistant. 
 USER: Hello, I am John Hernandez.

ASSISTANT: Hello, how can I assist you?

USER: I would have to participate in the singing competition in Denver CO-DEN.Could you please help me for booking a flight ticket?

ASSISTANT: Ok, may I know your origin point and price limit?

USER: My origin point is New York NY-JFK and price limit should be 500.

ASSISTANT: Could you please provide your journey dates?

USER: My journey dates are 03/19 and 03/21.

ASSISTANT: We found a flight with Hawaiian airlines of 1001 flight and price is 100. Shall I proceed for booking?

USER: You can proceed with the booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.