Hello! Hello! A textbook on conducting telephone conversations for foreign students

The textbook on conducting telephone conversations is intended for foreign students studying the Russian language and continuing to improve their knowledge. The starting level of the Russian language for foreign students working with the textbook is B1.
The textbook consists of... three chapters, each of which presents: etiquette expressions and speech stereotypes of a modern telephone conversation; dialogues illustrating telephone conversations in typical communication situations; tasks aimed at developing perception and understanding of authentic telephone texts and independently constructing statements over the phone.
At the end of the textbook, there is an appendix - “A Brief Dictionary of Youth Slang,” which includes words and expressions typical of youth speech in informal communication and often used in telephone conversations.