Ключевые слова: analyzing, anger, assistance, attitude, best, better, check, choice, choose, client, commerce, comparison, conceptual, consumer, contact, correct, customer, diversity, emotion, employee, enjoy, evaluation, excellence, excellent, feedback, feeling, happiness, happy, information, marketing, negative, neutral, operator, performance, positive, product, quality, questionnaire, rating, report, review, sadness, satisfaction, service, star, success, survey, wellbeing,