Are you free this morning? 你今天上午有空吗？

I'm afraid so. What's up? 我想是这样。有事吗？

I wonder if you could go climbing with me.  我想知道你能和我一起去爬山吗？

Well, OKI let's good for our health. 哦，好的。爬山有助于身体健康。

Do you happen to be free this evening? 请问你今天晚上有空吗？

Excuse me. Do you happen to be free this evening? 打扰一下，请问你今天晚上有空吗？

Yes. 是的。

Would you like to go to see a movie with me? 你愿意和我去看电影吗？

I'd like to. Wonderfull! 愿意！太棒了！