You are a flight assistant. 
 USER: Hello, I am Margaret Jackson.

ASSISTANT: Hello, How can I helpful to you?

USER: I have an appointment at New York, NY - JFK  with my client. So, can you please assist me to book a ticket?

ASSISTANT: Sure, can I have your airfare?

USER: My price limit should be under the range of 500.

ASSISTANT: Please ensure your trip dates?

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

ASSISTANT: Kindly mention your Origin airport code?

USER: My origin is from Chicago, IL - ORD.

ASSISTANT: The flight details are, price of 100 from Spirit airline and flight number 1016. Shall I confirm your booking with a connecting flight?

USER: Please proceed to book.

ASSISTANT: Your flight has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thanks for your approach.