Sure. It's 6225-9438.

好的。是6225-9438。

Is this five-two-one double eight six-four?

这里是521-8864吗？

We're organizing an informal party, and I'd like you to come.

我们计划组织一个非正式聚会，我想请你参加。

Would two o'clock be acceptable?

两点钟合适吗？

When was your reservation?

您预定的是什么时候？

I'd like to order a hamburger and fries.

来个汉堡包和薯条吧。