Requesting is one of the early language skills that children need to learn:
so when your child wants something follow this exchange to help them.
Adult: "Mmmm that looks yummy". WAIT
"I like to eat (name snack item)"
"Hmmm, I wonder what you want" WAIT
"I think you want something...." WAIT
"Do you want skittles or crackers?" WAIT
"Skittles" Give them 1 or 2 then start over trying again supporting the request.