约会条主要用于邀朋友相聚等，内容必须包含约会的事由，如果已经确定了时间和地点，则应将具体时间和地点写在便笺上。

Aug 8, 2007

Andy,

Fred is now with us. He is going to New York tomorrow morning to pursue his graduate study and we will not be able to see him for a long time. We are having a dinner party at 7 p.m. this evening at my home. It would be nice if you could come over and see him。

Michael