Do you have time to talk?应该怎么回答？

Do you have time to talk?
你有时间一起吗？
answer：
sure,i do have time
yes,i do
sorry,i don't have time
no, i don't

肯定回答：
Yes,I do/Of course/Sure
否定回答：
Sorry,i'm busy now
I'm afraid it's not available at the moment.May be later
No, i don't.(这种比较直接)

I`d love,too.