A terminal apparatus, comprising: an attribute acquisition unit adapted to acquire attribute data indicating an attribute of a user or an environment surrounding the user; a suggestion sentence acquisition unit adapted to receive, from a server apparatus, prompt sentence data indicating a sentence that prompts the user to issue a speech instruction and corresponding to the attributes indicated by attribute data, the prompt sentence data being transmitted from the server apparatus in reply to transmission of the attribute data to the server apparatus and being generated using pieces of the attribute data and pieces of instruction sentence data stored in association with such pieces of attribute data; a display control unit adapted to cause a display apparatus to display the sentence indicated by the prompt sentence data when a predetermined period elapses without issuance of a speech instruction by the user since the terminal apparatus started to wait for the speech instruction by the user; a speech data acquisition unit adapted to acquire speech data indicating a speech made by the user in response to the display apparatus displaying the sentence indicated by the prompt sentence data; a processing ID acquisition unit adapted to receive, from a server apparatus, processing identification data identifying processing corresponding to an instruction indicated by the speech data; a processing execution unit adapted to execute the processing identified by the processing identification data; and a transmission unit adapted to transmit the attribute data and the speech data to the server apparatus, wherein the processing ID acquisition unit is adapted to receive the processing identification data that is transmitted from the server apparatus in reply to transmission of the speech data by the transmission unit. an attribute acquisition unit adapted to acquire attribute data indicating an attribute of a user or an environment surrounding the user; a suggestion sentence acquisition unit adapted to receive, from a server apparatus, prompt sentence data indicating a sentence that prompts the user to issue a speech instruction and corresponding to the attributes indicated by attribute data, the prompt sentence data being transmitted from the server apparatus in reply to transmission of the attribute data to the server apparatus and being generated using pieces of the attribute data and pieces of instruction sentence data stored in association with such pieces of attribute data; a display control unit adapted to cause a display apparatus to display the sentence indicated by the prompt sentence data when a predetermined period elapses without issuance of a speech instruction by the user since the terminal apparatus started to wait for the speech instruction by the user; a speech data acquisition unit adapted to acquire speech data indicating a speech made by the user in response to the display apparatus displaying the sentence indicated by the prompt sentence data; a processing ID acquisition unit adapted to receive, from a server apparatus, processing identification data identifying processing corresponding to an instruction indicated by the speech data; a processing execution unit adapted to execute the processing identified by the processing identification data; and a transmission unit adapted to transmit the attribute data and the speech data to the server apparatus, wherein the processing ID acquisition unit is adapted to receive the processing identification data that is transmitted from the server apparatus in reply to transmission of the speech data by the transmission unit.