This document presents a conceptual framework that examines the relationship between online customer expectations, satisfaction, and purchasing behavior in B2C e-commerce. It hypothesizes that key factors of customer expectations like customer service, website design, security/privacy, and reliability/fulfillment positively influence expectations. It also hypothesizes that expectations positively impact satisfaction and purchasing behavior. Satisfaction and trust are also expected to positively impact purchasing behavior, while perceived risk is expected to negatively impact it. The framework is based on expectation-confirmation theory and motivator-hygiene theory.