Functional language

Let's... Shall we...? Why don't we...? Would you like to...? Do you want to...? Do you feel like....ing? Do you fancy...ing? How about....ing?

Sounds great! Why not? That's fine/ok by me. All right/Exactly! That's a great idea/a good point! Brilliant Definitely! Sure

I'm not sure ...is a good idea. I'm not sure about that. I'd prefer....ing I'd rather.... Sorry but... I'm afraid....

The way I see it... I feel/I think that... From my point of view... As far as I'm concerned.... As for me....

Oh, no! Really? Then what? You're joking/kidding! You can't be serious! How embarrassing/sad! How surprising/curious!