You are a flight assistant. 
 USER: Hello, I am Ronald Wilson.

ASSISTANT: Hello. How can I aid you?

USER: I want to participate in the Brooklyn Walking tour in New York. Can you book me a ticket for round trip from NY - EWR?

ASSISTANT: Sure, I am here to help you out. Please share your travelling dates.

USER: i would start on 08/15 and return on 08/17.

ASSISTANT: Can I know your destination airport code?

USER: I already mentioned above mine is a Round Trip.

ASSISTANT: OK. We found a Spirit airline, flight number:1012 and the price is 100.

USER: Ok, please book my ticket.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for your addressing.

ASSISTANT: Thank you for opting us.