根据中文情景提示,写出恰当的句子.你的朋友Luck到你家玩,你会这样介绍你的姐姐

You :Luck,Welcome to my home,this is my sister.
Sister ,this is my friend,Luck.
Sister:Nice to meet you,Luck!Come in ,please.
Luck:Thank you.I'm pleased to meet you,too.
Sister:Sit down,please.I'll get dessert.
Luck:Thank you for all you've done.