Look up this word
request

In a sentence
Mám na teba prosbu.
I have a favor to ask of you.
Mám veľkú prosbu.
I have a big favor to ask.
Mám na teba veľkú prosbu.
I have a big favor to ask.
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Example sentences from Tatoeba (CC BY 2.0 FR).
Full attribution on References.