Can I talk to you right now?
我现在可以跟你谈一谈吗？

You got a minute?
你有空吗？

Can I have a word with you?
我可以跟你谈一下吗？

I need to talk to you.
我需要跟你谈一谈。

May I have a little talk with you?
我可以跟你谈一下吗？

Can we sit down and talk it over?
我们可以坐下来好好谈一谈吗？

Can we talk?
我们可以谈一下吗？

Can I bend your ears for a minute?
可不可以借我一分钟？我有事要跟你说。

May I have a conversation with you?
我可以跟你谈一下吗？

Do you have time now? I've got something to tell you.
你现在有空吗？我有事要跟你说。