In addition to getting the transcription split by utterances, you can request semantic sentence segmentation for more readable results.
You can get translated sentences by enabling both sentences and translation! You’ll receive sentences output for the original transcript, and each translation result will also contain sentences in the translated language.
request data
{
  "sentences": true
}
The result will contain a sentences key (in addition to utterances): 
"sentences": {
  "success": true,
  "is_empty": false,
  "results": [
    {
      "sentence": "Amy, it says you are trained in technology.",
      "start": 0.4681999999999999,
      "end": 2.45525,
      "words": [...],
      "confidence": 0.95,
      "language": "en",
      "speaker": 0,
      "channel": 0
    }
  ]
}