A communication terminal comprising: a sending and receiving unit configured to receive a presence information transmitted from a plurality of destination terminals through a management system, each destination terminal representing a destination candidate, the transmitted presence information including attribute information that represents, for each destination candidate, one or more attributes of the destination candidate, and state information that represents, for each of the destination candidates, whether the destination candidate is in a state of being ready to start communication; a determiner configured, based on the attribute information and the state information received by the sending and receiving unit, to determine, for each of the attributes, which destination candidate among the one or more destination candidates associated with the attribute is in the state of being ready to start the communication; a display controller configured to display, for each of the attributes and based on the determination of the determiner, information that represents the attribute in association with information that represents either that at least one of said destination candidates associated with the attribute is in the state of being ready to start the communication or that none of said destination candidates associated with the attribute is in the state of being ready to start the communication; and an operation input receiving unit configured to receive a selection of an attribute corresponding to displayed information, the attribute being associated with at least one of said destination candidates in the state of being ready to start the communication, wherein the attribute is an available language or languages, subject of medical treatment or treatments, name of a place or names of places, or type of goods or types of goods, and wherein the communication terminal transmits a start request for the communication to a plurality of destination terminals corresponding to the destination candidates associated with the selected attribute, determined by the determiner as being in the state of being ready to start the communication, and in a case where a plurality of responses to the start request are transmitted from the plurality of destination terminals to the communication terminal, establishes the communication with the destination terminal from which the response was received first. a sending and receiving unit configured to receive a presence information transmitted from a plurality of destination terminals through a management system, each destination terminal representing a destination candidate, the transmitted presence information including attribute information that represents, for each destination candidate, one or more attributes of the destination candidate, and state information that represents, for each of the destination candidates, whether the destination candidate is in a state of being ready to start communication; a determiner configured, based on the attribute information and the state information received by the sending and receiving unit, to determine, for each of the attributes, which destination candidate among the one or more destination candidates associated with the attribute is in the state of being ready to start the communication; a display controller configured to display, for each of the attributes and based on the determination of the determiner, information that represents the attribute in association with information that represents either that at least one of said destination candidates associated with the attribute is in the state of being ready to start the communication or that none of said destination candidates associated with the attribute is in the state of being ready to start the communication; and an operation input receiving unit configured to receive a selection of an attribute corresponding to displayed information, the attribute being associated with at least one of said destination candidates in the state of being ready to start the communication, wherein the attribute is an available language or languages, subject of medical treatment or treatments, name of a place or names of places, or type of goods or types of goods, and wherein the communication terminal transmits a start request for the communication to a plurality of destination terminals corresponding to the destination candidates associated with the selected attribute, determined by the determiner as being in the state of being ready to start the communication, and in a case where a plurality of responses to the start request are transmitted from the plurality of destination terminals to the communication terminal, establishes the communication with the destination terminal from which the response was received first.