A: hi B, how are you?
B: I'm fine thanks, and you?
A: I'm great! what are you doing now?
B: not much, I'm free since it is still holiday
A: oh really? how about you come to my birthday party on tuesday night?
B: oh so tuesday is your birthday? that sounds great! I'd love to!
A: nice! come to my house on tuesday 7pm!
B: okay, how about the dress code?
A: it is formal
B: okay, I'll see you later on your party!
thats accepting and invitation lol im sorry theyre a package =) hope it helps u