/public/sessions/{sessionId}

{
  "conversation": {
    "items": [
      {
        "role": "string",
        "text": "string",
        "timestamp": 0
      }
    ]
  },
  "id": "string",
  "companionId": "string",
  "functions": [
    "string"
  ],
  "knowledgeBaseId": "string",
  "faqIds": [
    "string"
  ],
  "externalClientId": "string",
  "tags": {
    "property1": "string",
    "property2": "string"
  },
  "createdAt": 0,
  "startedAt": 0,
  "closedAt": 0
}

{
  "code": "string",
  "description": "string",
  "type": "failure",
  "numericType": 0
}