Electronic apparatus for responding to question using multi chat-bot and control method thereof

An electronic apparatus comprising:

• at least one memory storing instructions, a plurality of chat-bots for responding to a plurality of questions, a question classification model trained to identify a chat-bot among the plurality of chat-bots for responding to an input question, and information of a plurality of domains respectively corresponding to the plurality of chat-bots;
• and
• at least one processor configured to execute the instructions to:
• input the input question into the question classification model, the question classification model outputting a first chat-bot among the plurality of chat-bots for responding to the input question,
• through the question classification model, identify a first domain among the plurality of domains that is related to an input text included in the input question,
• based on the information of the plurality of domains respectively mapped to the plurality of chat-bots, select the first chat-bot among the plurality of chat-bots that is mapped to the first domain,
• acquire a first response for the input question, through the first chat-bot,
• based on the first response comprising information of a function of the electronic apparatus that can be performed at the electronic apparatus, generate a generated question requesting to perform the function,
• input the generated question into the question classification model, the question classification model outputting a second chat-bot corresponding to a domain of generated text included in the generated question among the plurality of domains respectively corresponding to the plurality of chat-bots for responding to the generated question,
• acquire a second response for the generated question, through the second chat-bot, and
• provide a combined response to the input question, based on the first response and the second response.