People should write in Sindarin or Quenya here with english translations so people who don't know the languages can learn.
Elen síla lúmenn’ omentielvo
A star shines on the hour of our meeting
Elen (Star) sila (shines) lumenn (on the hour) omentielvo (our) + omentie (meeting)
(Quenya)
Elfdict
Onen i-Estel Dunedain, u-chebin estel anim.
I gave hope to the Dunedain, I have kept no hope for myself (Sindarin).
Gilraen's parting words to her son, Aragorn II
A Elbereth Gilthoniel,
O Elbereth Star-kindler
silivren penna míriel
(white) glittering slants down sparkling like jewels
o menel aglar elenath!
from [the] firmament [the] glory [of] the star-host!
Na-chaered palan-díriel
To-remote distance far-having gazed
o galadhremmin ennorath,
from [the] tree-tangled middle-lands,
Fanuilos, le linnathon
Fanuilos, to thee I will chant
nef aear, sí nef aearon!
on this side of ocean, here on this side of the Great Ocean!
Direct translation: however, Tolkien interpreted it as thus:
"O! Elbereth who lit the stars,
from glittering crystal slanting falls with light like jewels
from heaven on high the glory of the starry host.
To lands remote I have looked afar,
and now to thee, Fanuilos, bright spirit clothed in ever-white, I here will sing beyond the Sea, beyond the wide and sundering Sea."
https://www.youtube.com/watch?v=MdfYy4gW9L4
Mr. Tolkien himself
Perhaps some elvish conversation between people?
Not sure there's a lot of that in the books. Perhaps the movies had more examples.
Have a look https://www.youtube.com/watch?v=DT-xR-R9VkU :)
Another primer - be sure to keep your close captions on: https://www.youtube.com/watch?v=odzqJtkBsoo
Mae govannen!
Well met or hello
(Sindarin)