You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight ticket from LAS to EWR?

ASSISTANT: Sure, please share your planned travel dates?

USER: I have planned my trip dates are June 3 to June 5.

ASSISTANT: Can I have your name please?

USER: My name is Carolyn Hill.

ASSISTANT: Any other requirements to be met?

USER: I need a flight with single connection.

ASSISTANT: Do you have any class preference?

USER: I would like to prefer Business class.

ASSISTANT: Sorry, no flights found with your given details.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.