make a by mistake on wrongly booked the Senior Director flight from USA,back to Beijing.是啥意思啊

问题描述:

make a by mistake on wrongly booked the Senior Director flight from USA,back to Beijing.是啥意思啊
make a by mistake on wrongly booked the Senior Director flight from USA,back to Beijing.
The travel agency that we are using,make a by mistake on wrongly booked the Senior Director flight from USA,back to Beijing.这是完整的

这是英语吗,我晕死,哪有这么说的.
我们使用的旅行社,不小心犯了一个错误,把我们高级主管从美国去北京的机票订错了.顺便说一句,(make a by mistake)中的by 应该去掉,打的时候打错了.