You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to book a flight ticket from EWR to LAS to meet my uncle.

ASSISTANT: Sure, can you please share your travel dates?

USER: Sure, my travelling dates are Aug 25 and Aug 27.

ASSISTANT: May I know your connection limit?

USER: Yes, I prefer to travel in a direct flight.

ASSISTANT: Do you have any other specification that you are looking for?

USER: No.

ASSISTANT: May I know your name to proceed further?

USER: Sure, Benjamin Smith here.

ASSISTANT: I am sorry to inform you that there is no flight available at your request.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for contacting us.