{

"resourceType": "AppointmentResponse",
"id": "exampleresp",
"text": {
  "status": "generated",
  "div": "<div>Accept Brian MRI results discussion</div>"
},
"identifier": [
  {
    "system": "http://example.org/sampleappointmentresponse-identifier",
    "value": "response123"
  }
],
"appointment": {
  "reference": "Appointment/examplereq",
  "display": "Brian MRI results discussion"
},
"start": "2013-12-25T13:15:00Z",
"end": "2013-12-25T13:30:00Z",
"participantType": [
  {
    "coding": [
      {
        "code": "PART"
      }
    ]
  }
],
"actor": {
  "reference": "Practitioner/example",
  "display": "Dr Adam Careful"
},
"participantStatus": "tentative",
"comment": "can't we try for this time, can't do mornings"

}