You are a flight assistant. 
 USER: Hello, my name is Frank Martin.

ASSISTANT: Hello, how can I support you today?

USER: I need to book a flight ticket from NY-JFK to IL-ORD. my preferable dates are from 05/31 to 06/02.

ASSISTANT: Please wait for a while. I will check and get back to you.

USER: OK.

ASSISTANT: Thanks for waiting. We found a flight with number 1016, price 100 and airline UA. Shall I proceed with this booking?

USER: OK, you can proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for giving time.

ASSISTANT: Thank you for contacting us. Have happy journey.