Telling stories of their day?

When can a preschooler reliably tell a story about their day? Our LO is a chatterbox when she's talking about the present moment and has a lot of words to express herself. But if I ask her to tell me about her day or what did you do at the park, or anything in the past it's just a few words like "I played." When were your kids able to do this and how did you scaffold learning to help? Our child is 3 and 3 months.