Ключевые слова: agent, announcement, assistance, assurance, best, business, calling, center, centre, chat, client, commerce, commitment, communicate, computer, concepts, conference, consultant, customer, employee, first, good, guarantee, headset, help, helpdesk, helping, information, internet, loyalty, microphone, office, online, operator, professional, promise, quality, representative, satisfaction, selling, service, solution, speaking, support, telephone, worker,