You are a flight assistant. 
 USER: Hello, I am Justin Gonzalez.

ASSISTANT: Hello, Justin Gonzalez. How can I support you today?

USER: I am planning to visit Neon Museum at Las Vegas, NV-LAS with my friends.

ASSISTANT: Ok.

USER: Can you please book me the connecting flight with price under 500?

ASSISTANT: Sure, Can you forward your travel dates?

USER: Sure, My travelling dates are from 04/08 to 04/10.

ASSISTANT: Share your origin point.

USER: My origin is Austin, TX-AUS.

ASSISTANT: Please, hold on.

USER: Ok.

ASSISTANT: Thanks for being waiting, We have no flight found with your dates of travel. Thank you for availing us.

USER: Ok, Thank you.