Explanation:
It would be hard to give you an exact answer since you did not give the table. However, I can help you out a bit here and you can just see what fits your problem.
Dimples (D) is dominant and not having dimples (d) is recessive. When we talk about phenotype, it means that you are talking about the physical expression of the genotype given.
We can have 3 possibilities in terms of Genotype.
DD Dd dd
If the offsprings have a genotype with at least one dominant allele, then the dominat trait will be expressed. If there are two recessive alleles, the recessive trait will be expressed.
So in your case,
Genotype Phenotype
DD off-spring will have dimples
Dd off-spring will have dimples
dd off-spring will have NO dimples.