We suggest that you make reservation before March 25.

我们建议您在3月25日之前完成预订。

C︰I wonder whether I could make reservation for February.

我想知道是否可以为二月做几项预订。

Eg. That sounds reasonable. Let me think it over. And I'll call your back to make reservation.

这个听起来很合适。让我考虑一下。然后我会给你回电话预定的。