You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you help me in booking from EWR to LAS, as there is a business meeting to attend?

ASSISTANT: Sure, please share me your travelling dates?

USER: My trip dates are Dec 23 to Dec 25.

ASSISTANT: Do you have any class preference?

USER: I prefer a business class.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Kenneth King.

ASSISTANT: Sorry, there were no flights with your given details.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.