{
  "type": "object",
  "properties": {
    "starts_at": {
      "type": "string",
      "format": "date-time",
      "description": "The requested start, as an RFC 3339 timestamp with a timezone."
    },
    "ends_at": {
      "type": "string",
      "format": "date-time",
      "description": "The requested end, strictly after starts_at and within the permitted window in state."
    }
  },
  "required": ["starts_at", "ends_at"],
  "additionalProperties": false
}