you can say. Romaji→watashi no namae wa カラニ desu.

Well a direct translation would be カラに (Karani) since Japanese doesn't have Ls~

i can't

I believe it's spelled as カラニ :)

I would imagine it would be "Karani" and spelled "カラニ". The Japanese language combines the "L" and "R" sounds into one, so they are very similar sounding. For instance, mine would be "Aruderia" but its easier to spell it like this ア--デリア, without the first "R"