。
She told me she was going to Paris in August.
Literal
She [topic-は] me [to-に] August [in-に] Paris [to-に] go [quotative-と] said.
Three に particles in this sentence, doing three different jobs: 私に (dative recipient — 'told me'), ８月に (time — 'in August'), and パリに (destination — 'to Paris'). The same particle, three meanings; learners often work through this confusion gradually before each に lock into its grammatical role. The non-past plain form 行く inside the quoted clause reports her intended future action, even though the matrix verb いった ('said') is past.