DialGraph is a virtual assistant that interacts with people to solve their queries. It interprets the human language and speech in a natural language, provides answers on preconfigured subjects and efficiently solves the questions of the users. A virtual assistant is an artificial intelligence that answers questions for which has an automatic preconfigured answer; it assists the users and guides them through the resolution process of their queries. DialGraph uses natural, simple and human language. It identifies concrete queries and it is able to guide requesting more details informing simultaneously on the alternatives on which assistance can be supplied. The efficiency of DialGraph is due to its capacity to tackle extensive and very detailed assistances.