Small animation

Design details: I need a small animation (1 to 3 minutes) that showcases a lady walking her dog to a pet shop. Inside the pet shop she buys a bag of food and leaves a high amount of coins on top of the counter, leaves the shop with a sad smile and goes home. At home, she does an online search in her laptop for discounts and buys a discount voucher, leaves home, goes back to the pet shop and buys the same the same bag of food leaving only 1 coin on the counter this time. She then leaves the shop with a happy smile.
I need this animation in 2d using aftereffects
Target audience: animation after effects
Ideas for the visual style: minimalist
Extra notes: