Answer: Buenas Dias is incorrect
Explanation: The correct way of saying it is buenos días. I hope you found my answer helpful. If you have any other questions feel free to ask me!
Castilian dialect, Spanish Castellano, a dialect of the Spanish language (q.v.), the basis of modern standard Spanish. Originally the local dialect of Cantabria in north central Spain, Castilian spread to Castile. After the merger of the kingdoms of Castile, Leon, and Aragon in the late 15th century, it became the standard language of all Spain and in the following centuries the language also of Spanish America.
The word 'shy' in Spanish is 'reservado' for a boy and 'reservada' for a girl. However, 'reservado' mean reserved, which is a synonym of shy. :)