You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you guide me in booking my flight ticket from LAS to EWR?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates will be Nov 19th to Nov 21st.

ASSISTANT: Do you have any connection limit preference?

USER: I prefer a direct flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Could you help me with your name please?

USER: I am Samuel Carter.

ASSISTANT: Sorry, there is no flight available for the mentioned dates.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us.