I wonder if you are free tonight?

Are you interested in having dinner with me?

Can I invite you to dinner tonight?

What kind of restaurant do you like, China or the West?

Do you prefer to go to China restaurant or western restaurant?

If it's convenient for you, I'll pick you up at 7 pm.

I'll pick you up at 7 pm, if possible.

That's all I have. I searched it online.