Finish with a dash of cream, if you like.
I heated butter in a pan, cracked a few eggs into a bowl, added a dash of cream and sea salt and frothed them with a whisk.
The New York Times - Food
And you can't beat a basic soup using stock, onions, potatoes and as much pumpkin as you can muster, enhanced with a dash of cream or milk and a sprinkle of nutmeg.
La Grotta Ices – whose flavours currently include peach leaf with raspberry ripple and mulberry granita –is typically made from organic milk, free-range eggs and up to 50% fresh whole fruit, plus a dash of cream.
Stacked slices of red and golden beets were slathered with warmed goat cheese, an excellent mating of sweet and tangy; and butternut squash soup came with undertones of smoky sausage, with a dash of cream smoothing and uniting the flavors.
Another simple sorrel treat is to soften the leaves in a little butter and mix in a dash of cream: poured over a fried salmon steak, fishcakes or poached eggs, this is another low-maintenance but brilliantly effective way of getting some action into an otherwise mellow mouthful.
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Dollop is definitely a reasonable answer if you want less than a "normal" amount of cream on your strawberries, especially compared to "oodles" or "lashings" [which both imply you want a lot more than would be normal].
A dash is a reasonable amount for hot sauce, a spice, or maybe sugar with strawberries.
But for cream + strawberries, a dash would be too little and maybe nearly pointless. You'd barely taste it, like maybe be enough to get a few of them damp. That seems nearly pointless to me; if you don't like cream then just ask to not have any, but I'm lucky that I don't have to mess around with tiny servings to stay healthy. Maybe you could get some flavour out of a dash of cream on a couple strawberries. [And I like milk, cream, and dairy in general, so maybe I'm just having a hard time imagining liking only a small amount of cream more.]
Of course, given that we're talking about cream, you'd probably end up with an amount at the lower end of what's reasonable, rather than any specific quantity like 1/8th of a teaspoon. i.e. "a dash of cream" will be lot more volume than "a dash of hot sauce" when you're talking to another human, not a robot strictly applying a definition of a dash.
So on second though, a dash is a reasonable answer, too.
A dollop could definitely imply you want less than is normally served, but it's pretty subjective so you'd probably want to say "only a dollop" to get about enough cream to get the strawberries wet but not have much excess liquid in your bowl.
This answer doesn't really have a strong point one way or the other, but hopefully it gives some insight into the subjective implications of the words. Or makes you want some berries + cream. Going to get some now [blueberries + raspberries].