Would you mind waiting until one is free ? 你介意等到有空位吗?

Well,how long will it take? 好，要等多久呢?

When will you have a table free? 你们什么时候有空桌?

I'm afraid there're no other places free at the moment. 目前恐怕没有别的空位了。

I'm afraid I don't have anything for ten at the moment. 暂时恐怕没有10个人坐的空桌。