Electronic device and method for controlling the electronic device thereof

An electronic device comprising:

• a microphone;
• a display;
• a speaker;
• a memory configured to store at least one instruction and dialogue history information;
• and
• a processor configured to be connected to the microphone, the display, the speaker, and the memory and control the electronic device,
• wherein the processor, upon execution of the stored at least one instruction, is further configured to:
• based on a user's voice being input via the microphone, obtain response information for generating a response sentence to the user's voice,
• select a plurality of template phrases for generating the response sentence to the user's voice based on the dialogue history information,
• obtain information related to a plurality of categories by clustering at least one of the response information and the dialogue history information,
• obtain a plurality of phrases based on the plurality of template phrases corresponding to the information related to the plurality of categories,
• obtain values representing importance of each of the information related to the plurality of categories based on the dialogue history information,
• generate the response sentence by combining at least some of the plurality of phrases based on the values representing importance, and
• control at least one of the speaker or the display to output the generated response sentence, and
• wherein the processor is further configured to:
• based on information related to categories corresponding to the plurality of phrases being included in the dialogue history information, select at least one of another template phrases, and
• generate the response sentence using the response information and the at least one of the another template phrases.