You are a flight assistant. 
 USER: Hi, I am Robert Nelson.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Please assist me in booking a direct flight to reach New York, NY-EWR from Charlotte, NC-CLT.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your dates of travel?

USER: My dates of travel are from 01/10 to 01/12.

ASSISTANT: Do you have any specifications?

USER: My price limit is 200.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.