It is very interesting dream which lets know how you perceive yourself. If you dreamed that talk to the person at whom strong foreign-language accent, so you do not find adherents and therefore decided that anybody and no power on earth cannot change your opinion. Be so pessimistic, and the world will not be so hostile. Perhaps, you did not find yet the one in whom you could trust. In the near future this situation will change. You talk in a dream to accent – the real warning of uselessness of your efforts. It is worth replacing a point of application of efforts, in the roundabout way you will be able to achieve the desirable. That way which you chose now, does not suit you. The dream in which your acquaintance had very strong accent, means that in real life you underestimate the person for what will regret subsequently. However the dream has such value only in case you badly understood each other; if you, despite accent, perfectly understood the interlocutor, misunderstanding will soon dissipate and everything will rise on the places.
Someone speaking with an accent can represent:
The idea of them being or seeming foreign or seeming different from you or from others in some way
A characteristic you attribute to that person that reminds you of the culture or area associated with the accent (such as a German accent possibly representing precision or attention to detail, if that's what you associate with Germany).