You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from LAS to JFK, Can you please help me for booking?

ASSISTANT: May I know your planned trip dates?

USER: I would like to travel on 01/07 to return on 01/09.

ASSISTANT: Do you have any connection limit preference?

USER: I need a direct flight.

ASSISTANT: Could you help me with your name please?

USER: Jason Collins here.

ASSISTANT: Sorry, there is no flight available on this route for the given dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.