You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: I am Joseph Hall.

ASSISTANT: Yes, how can I help you?

USER: I am starting a business in New York, could you please help me to book a ticket from LAS to JFK?

ASSISTANT: Sure, please provide me your travelling dates?

USER: My departure day is 07/31 and my arrival date is on 08/02. Make sure that my connections limit is 1 and my price limit is 500.

ASSISTANT: Sorry Hall, there are no flights available with your request.

USER: Ok, thank you for your information.

ASSISTANT: Thank you and have a nice day.