that so nice oy you to say. what does it means
someone said to me ...I wish that you be happy always.
That so nice of you to say [can i use this sentence is it right]

Question

that so nice oy you to say. what does it means
someone said to me ...I wish that you be happy always.
That so nice of you to say  [can i use this sentence is it right]

Answer

With a slight correction: "That's (or That is) so nice of you to say." But yes, that is an appropriate response.

In conversational English, we'd usually add an "Aww.... to add a degree of warmth/tenderness (Aww...that's so nice of you to say!)