求翻译：顾先生联系我们的顾问，由于他在北京要处理额外的事情，请求更改航班（从北京回到上海）。给你造成麻烦很抱歉，不知道是否有可能调整。是什么意思？

The Koo contact our consultants in Beijing to deal with something extra, a request to change the flight (from Beijing to return to Shanghai). To cause you trouble I am sorry, do not know whether there may be adjusted.

Mr. Gu, as a result of his contact our consultants to handle the additional things in Beijing Flight Change Request (from Beijing, he returned to Shanghai). I am sorry to cause trouble to you do not know whether it would be possible to restructure.

Mr. Gu contacts with us consultant, because he wants to handle the extra matter in Beijing, requested the change scheduled flight (returns to Shanghai from Beijing).Creates the trouble to you to be sorry very much that, did not know whether has the possibility adjustment.

Regard to contact our consultants, because he was in Beijing to handle the additional business, request to change flights (from Beijing to Shanghai). Causing trouble to you I am sorry, I do not know is it possible to adjust.