Electronic devices and methods of handling user utterances

An electronic device comprising:

• memory storing instructions;
• and
• at least one processor,
• wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to:
• receive user utterance data;
• obtain an utterance-domain data set comprising candidate utterance data that is based on the user utterance data;
• generate transformed utterance data associated with the user utterance data based on a language model and the utterance-domain data set;
• and
• provide a response corresponding to the user utterance data, based on the transformed utterance data,
• wherein the utterance-domain data set comprises a first candidate utterance data paired with a first domain of a plurality of domains and a second candidate utterance data paired with a second domain of the plurality of domains, the first candidate utterance data comprises a first word, and the second candidate utterance data comprises a second word that is different from the first word, and
• wherein each domain of the plurality of domains corresponds to a different operation or function.