Ключевые слова: agent, assistance, business, businessman, call, calling, center, centre, client, communication, computer, consultant, customer, desk, discussing, exhausted, explaining, fatigue, headphone, headphones, headset, help, helpdesk, helpline, hotline, it, laptop, man, marketing, microphone, notebook, office, operator, phone, receptionist, representative, sales, service, sleeping, sleepy, smm, speaking, support, talking, telemarketing, telephone, telesales, tired, work, working,