Here's a potential scenario: a travel agent service gets an end-user request, then it contacts an airline service for that end-user.

这里有一个可能出现的情形：一个旅行社服务从最终用户处获取一个请求，然后为这个最终用户联系航班服务。

youdao

I was heartsick, for I felt that the splendid years of my carefree childhood had come to an end.

我很难过，因为我觉得我无忧无虑的美好童年生活结束了。

《柯林斯英汉双解大词典》

Everyone will agree, he argues, that happiness is the ultimate end to be valued for itself and really only for itself.

他认为，每个人都会同意，幸福是且只是人们因其本身而珍视的终极目标。

youdao

They withdrew under a security agreement that calls for American combat forces to leave Iraq by the end of two thousand eleven.

VOA: special.2009.08.22

That is to say for many, many, many people literary theory had something to do with the end of civilization as we know it.

这就是说对于很多很多人来说,文学理论与,我们所知道的文明的结束有些关联。

耶鲁公开课 - 文学理论导论课程节选

There'd be certain activities perhaps, for example putting a gun to your head, that would put an end to your life.

也许会有某些特定的活动，比如用枪指着你的头，会结束你的生命。

耶鲁公开课 - 死亡课程节选

While the original Fiesta Movement program has been criticized for failing to ignite long-term growth behind the Fiesta, the promotion was never designed for that end.

FORBES: Ford Remixes The Fiesta Movement For 2014

Ready for that end-of-year upgrade?

ENGADGET: Verizon Wireless year-end roadmap leaks, Android and LTE spotted on the horizon?

It's the people who do it for shock that end up with huge misshapen ear lobes.

BBC: Ear stretching: 10 of your stories