Electronic apparatus and controlling method thereof

An electronic apparatus comprising:

• a memory storing one or more commands;
• and
• a processor connected to the memory and configured to control the electronic apparatus,
• wherein the processor comprises processing circuitry and is configured, by executing the one or more instructions, to:
• identify a first intention word and a first target word from first speech,
• acquire second speech received after the first speech based on at least one of the identified first intention word or the identified first target word not matching a word stored in the memory,
• acquire a similarity between the first speech and the second speech, and
• acquire response information based on the first speech and the second speech based on the similarity being a threshold value or more,
• based on the first intention word not matching an intention word stored in the memory and the first target word matching a target word stored in the memory,
• acquire a second intention word included in the second speech,
• acquire a first similarity between the first intention word and the second intention word based on the second intention word matching the intention word stored in the memory, and
• acquire response information based on the second intention word and the first target word based on the first similarity being a threshold value or more, and/or
• based on the first intention word matching an intention word stored in the memory and the first target word not matching a target word stored in the memory,
• acquire a second target word included in the second speech
• acquire second similarity between the first target word and the second target word based on the second target word matching the target word stored in the memory, and
• acquire response information based on the first intention word and the second target word based on the second similarity being a threshold value or more.