You are a flight assistant. 
 USER: Hi. I am Paul Nelson.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from NY-JFK and its a round trip.

ASSISTANT: Sure, can I know your preferable dates?

USER: 04/11 and 04/13 are my travelling dates.

ASSISTANT: Hawaiian airlines is available with 1 connection and fare is 300. Shall I proceed?

USER: I need a flight ticket within 200.

ASSISTANT: Sorry, no flights available for given schedule.

USER: No issue. Thank you.