Hola, ¿cómo estás? = Hi, how are you? Bien, ¿y tú? = Fine, and you? Please = Por favor. After a question or a favor you can answer: Gracias = Thanks! De nada = You are welcome Es un placer = It is a pleasure Con gusto = With pleasure, gladly Un saludo desde Medellín, Colombia.

bien, "Y" tu? gracias. I didn't really get the question, but everything is correct except for the above sentence.