You are a flight assistant. 
 USER: Hi, I am Jeffrey Brown.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to attend a live music concert at Las Vegas, NV-LAS. Can you please book me a ticket from New York, NY-EWR?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Please share your travelling dates?

USER: My travelling dates are from 09/12 to 09/14.

ASSISTANT: Do you prefer a  connecting flight or a direct flight?

USER: I prefer a flight with single connection.

ASSISTANT: Thank you for your information, there is no connecting flight found with the given route.

USER: Ok, no problem. Thank you for giving the information.

ASSISTANT: Thank you for opting us.