Final answer:
The next step for a sales associate after a customer has bought and installed a kitchen appliance is to follow up to ensure satisfaction.
Step-by-step explanation:
Once a customer has purchased and installed a kitchen appliance, the next step for a sales associate should be to follow up with the customer to ensure they are satisfied with their purchase. This involves checking in to see if the appliance meets their needs, is functioning properly, and addressing any questions or concerns they might have. This step is crucial for maintaining good customer relations and for the opportunity to assist further, whether it be through customer service or potentially guiding them towards future purchases.