cancel an appointment

I cancel the appointment.

私は約束をキャンセルします

I cancel the appointment because of heavy snow.

私は大雪のため約束をキャンセルします

I cancel the appointment this morning because of heavy snow.

私は大雪のため今朝約束をキャンセルします

I cancel the appointment by phone this morning because of heavy snow.

私は大雪のため今朝電話で約束をキャンセルします

I cancel the appointment with my teacher by phone this morning because of heavy snow.

私は大雪のため今朝電話で先生との約束をキャンセルします