You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Young. Could you please book a flight ticket from NV-LAS to NY-JFK?

ASSISTANT: Sure, can you please tell me your travel dates?

USER: My travelling dates are 08/06 and 08/08. I need only 1 connection limit and price limit should be with in 1000.

ASSISTANT: Sorry, there is no flight available as per your details.

USER: Thank you for your help.

ASSISTANT: Welcome.