This book is included in series Correspondence with a client humanly, consisting of 4th books. Books of this series are a practical manual for specialists working with clients. Books are rich in practical examples, illustrations, algorithms, helping to understand how correctly to conduct correspondence with a client in simple and difficult situations. Advices from these books can be fixed in basis of standards of conduct of correspondence in any company, caring of that, to intermingle with clients effectively, quickly and benevolently and at a minimum of efforts to arrive at a maximum of result.