How can I be of assistance to you today?

有什么我能帮忙的吗？

I hope this recommendation will be of assistance to achieve your goal of learning Chinese.

希望这篇推荐对您实现学习汉语的目标有所帮助。

I will pass over the impropriety of your appearing publicly while in mourning, realizing your warm desire to be of assistance to the hospital.

对于你在服丧期间到公众场合去露面这一过失，考虑到你是很想对医院有所贡献，我还可以原谅。