You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, what can I do for you?

USER: It is time to celebrate my boy friend birthday in this weekend could you please reserve a ticket.

ASSISTANT: Sure, could you please share your journey details?

USER: I want to start on 01/06 to New York, NY - EWR from Las Vegas, NV - LAS and end on 01/08.

ASSISTANT: OK, now may I know your name please?

USER: My name is Eric Evans.

ASSISTANT: Sorry Eric, there is no flight found according to your credentials.

USER: OK, not a problem. Thank you.

ASSISTANT: Sorry for the inconvenience. Have a good day.