本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。
# 練習 2：檢閱對話流程
在本練習中，您將檢閱用戶端應用程式與您在 中建立的 Amazon Lex V2 機器人之間傳送的 JSON 結構[練習 1：從範本建立聊天機器人](exercise-1.md)。對話使用 [RecognizeText](https://docs.aws.amazon.com/lexv2/latest/APIReference/API_runtime_RecognizeText.html) 操作來產生 JSON 結構。[RecognizeUtterance](https://docs.aws.amazon.com/lexv2/latest/APIReference/API_runtime_RecognizeUtterance.html) 會在回應中傳回與 HTTP 標頭相同的資訊。
JSON 結構會除以對話的每個回合。*轉*彎是來自用戶端應用程式的請求，以及來自機器人的回應。
## 轉 1
在第一次對話期間，用戶端應用程式會啟動與機器人的對話。請求的 URI 和內文都會提供請求的相關資訊。
```
POST /bots/botId/botAliases/botAliasId/botLocales/localeId/sessions/sessionId/text HTTP/1.1
Content-type: application/json
{
"text": "I would like to order flowers"
}
```
+ URI 可識別用戶端應用程式與之通訊的機器人。它還包含用戶端應用程式產生的工作階段識別符，用於識別使用者和機器人之間的特定對話。
+ 請求的內文包含使用者輸入用戶端應用程式的文字。在這種情況下，只會傳送文字，但您的應用程式可以傳送其他資訊，例如請求屬性或工作階段狀態。如需詳細資訊，請參閱 [RecognizeText](https://docs.aws.amazon.com/lexv2/latest/APIReference/API_runtime_RecognizeText.html) 操作。
從 `text`，Amazon Lex V2 偵測使用者訂購花朵的意圖。Amazon Lex V2 選擇其中一個意圖的槽 (`FlowerType`) 和其中一個槽提示，然後將下列回應傳送至用戶端應用程式。用戶端會顯示對使用者的回應。
```
{
"interpretations": [
{
"intent": {
"confirmationState": "None",
"name": "OrderFlowers",
"slots": {
"FlowerType": null,
"PickupDate": null,
"PickupTime": null
},
"state": "InProgress"
},
"nluConfidence": {
"score": 0.95
}
},
{
"intent": {
"name": "FallbackIntent",
"slots": {}
}
}
],
"messages": [
{
"content": "What type of flowers would you like to order?",
"contentType": "PlainText"
}
],
"sessionId": "bf445a49-7165-4fcd-9a9c-a782493fba5c",
"sessionState": {
"dialogAction": {
"slotToElicit": "FlowerType",
"type": "ElicitSlot"
},
"intent": {
"confirmationState": "None",
"name": "OrderFlowers",
"slots": {
"FlowerType": null,
"PickupDate": null,
"PickupTime": null
},
"state": "InProgress"
},
"originatingRequestId": "9e8add70-4106-4a10-93f5-2ce2cb959e5f"
}
}
```
## 旋轉 2
第 2 輪，使用者在第 1 輪以填入`FlowerType`插槽的值回應來自 Amazon Lex V2 機器人的提示。
```
{
"text": "1 dozen roses"
}
```
第 2 回合的回應顯示已填滿的`FlowerType`槽，並提供提示來引出下一個槽值。
```
{
"interpretations": [
{
"intent": {
"confirmationState": "None",
"name": "OrderFlowers",
"slots": {
"FlowerType": {
"value": {
"interpretedValue": "dozen roses",
"originalValue": "dozen roses",
"resolvedValues": []
}
},
"PickupDate": null,
"PickupTime": null
},
"state": "InProgress"
},
"nluConfidence": {
"score": 0.98
}
},
{
"intent": {
"name": "FallbackIntent",
"slots": {}
}
}
],
"messages": [
{
"content": "What day do you want the dozen roses to be picked up?",
"contentType": "PlainText"
}
],
"sessionId": "bf445a49-7165-4fcd-9a9c-a782493fba5c",
"sessionState": {
"dialogAction": {
"slotToElicit": "PickupDate",
"type": "ElicitSlot"
},
"intent": {
"confirmationState": "None",
"name": "OrderFlowers",
"slots": {
"FlowerType": {
"value": {
"interpretedValue": "dozen roses",
"originalValue": "dozen roses",
"resolvedValues": []
}
},
"PickupDate": null,
"PickupTime": null
},
"state": "InProgress"
},
"originatingRequestId": "9e8add70-4106-4a10-93f5-2ce2cb959e5f"
}
}
```
## 轉 3
第 3 輪，使用者以填滿`PickupDate`插槽的值，依次回應來自 Amazon Lex V2 機器人的提示。
```
{
"text": "next monday"
}
```
第 3 回合的回應會同時填入 `FlowerType` 和 `PickupDate`插槽，並提供提示來引出最後一個槽值。
```
{
"interpretations": [
{
"intent": {
"confirmationState": "None",
"name": "OrderFlowers",
"slots": {
"FlowerType": {
"value": {
"interpretedValue": "dozen roses",
"originalValue": "dozen roses",
"resolvedValues": []
}
},
"PickupDate": {
"value": {
"interpretedValue": "2022-12-28",
"originalValue": "next monday",
"resolvedValues": [
"2021-01-04"
]
}
},
"PickupTime": null
},
"state": "InProgress"
},
"nluConfidence": {
"score": 1.0
}
},
{
"intent": {
"name": "FallbackIntent",
"slots": {}
}
}
],
"messages": [
{
"content": "At what time do you want the 1 dozen roses to be picked up?",
"contentType": "PlainText"
}
],
"sessionId": "bf445a49-7165-4fcd-9a9c-a782493fba5c",
"sessionState": {
"dialogAction": {
"slotToElicit": "PickupTime",
"type": "ElicitSlot"
},
"intent": {
"confirmationState": "None",
"name": "OrderFlowers",
"slots": {
"FlowerType": {
"value": {
"interpretedValue": "dozen roses",
"originalValue": "dozen roses",
"resolvedValues": []
}
},
"PickupDate": {
"value": {
"interpretedValue": "2021-01-04",
"originalValue": "next monday",
"resolvedValues": [
"2021-01-04"
]
}
},
"PickupTime": null
},
"state": "InProgress"
},
"originatingRequestId": "9e8add70-4106-4a10-93f5-2ce2cb959e5f",
"sessionAttributes": {}
}
}
```
## 旋轉 4
然後，使用者提供意圖的最終槽值，也就是取花的時間。
```
{
"text": "5 in the evening"
}
```
在回應中，Amazon Lex V2 會傳送確認提示給使用者，以確認訂單是否正確。`dialogAction` 設定為 `ConfirmIntent`，而 `confirmationState`為 `None`。
```
{
"interpretations": [
{
"intent": {
"confirmationState": "None",
"name": "OrderFlowers",
"slots": {
"FlowerType": {
"value": {
"interpretedValue": "dozen roses",
"originalValue": "dozen roses",
"resolvedValues": []
}
},
"PickupDate": {
"value": {
"interpretedValue": "2021-01-04",
"originalValue": "next monday",
"resolvedValues": [
"2021-01-04"
]
}
},
"PickupTime": {
"value": {
"interpretedValue": "17:00",
"originalValue": "5 evening",
"resolvedValues": [
"17:00"
]
}
}
},
"state": "InProgress"
},
"nluConfidence": {
"score": 1.0
}
},
{
"intent": {
"name": "FallbackIntent",
"slots": {}
}
}
],
"messages": [
{
"content": "Okay, your dozen roses will be ready for pickup by 17:00 on 2021-01-04. Does this sound okay?",
"contentType": "PlainText"
}
],
"sessionId": "bf445a49-7165-4fcd-9a9c-a782493fba5c",
"sessionState": {
"dialogAction": {
"type": "ConfirmIntent"
},
"intent": {
"confirmationState": "None",
"name": "OrderFlowers",
"slots": {
"FlowerType": {
"value": {
"interpretedValue": "dozen roses",
"originalValue": "dozen roses",
"resolvedValues": []
}
},
"PickupDate": {
"value": {
"interpretedValue": "2021-01-04",
"originalValue": "next monday",
"resolvedValues": [
"2021-01-04"
]
}
},
"PickupTime": {
"value": {
"interpretedValue": "17:00",
"originalValue": "5 evening",
"resolvedValues": [
"17:00"
]
}
}
},
"state": "InProgress"
},
"originatingRequestId": "9e8add70-4106-4a10-93f5-2ce2cb959e5f"
}
}
```
## 轉 5
在最後輪換中，使用者會以 回應確認提示。
```
{
"text": "yes"
}
```
在回應中，Amazon Lex V2 透過將 設定為 `Confirmed`，並將 `confirmationState`設定為`dialogAction`關閉，表示意圖已實現。所有槽值都可供用戶端應用程式使用。
```
{
"interpretations": [
{
"intent": {
"confirmationState": "Confirmed",
"name": "OrderFlowers",
"slots": {
"FlowerType": {
"value": {
"interpretedValue": "dozen roses",
"originalValue": "dozen roses",
"resolvedValues": []
}
},
"PickupDate": {
"value": {
"interpretedValue": "2021-01-04",
"originalValue": "next monday",
"resolvedValues": [
"2021-01-04"
]
}
},
"PickupTime": {
"value": {
"interpretedValue": "17:00",
"originalValue": "5 evening",
"resolvedValues": [
"17:00"
]
}
}
},
"state": "Fulfilled"
},
"nluConfidence": {
"score": 1.0
}
},
{
"intent": {
"name": "FallbackIntent",
"slots": {}
}
}
],
"messages": [
{
"content": "Thanks. ",
"contentType": "PlainText"
}
],
"sessionId": "bf445a49-7165-4fcd-9a9c-a782493fba5c",
"sessionState": {
"dialogAction": {
"type": "Close"
},
"intent": {
"confirmationState": "Confirmed",
"name": "OrderFlowers",
"slots": {
"FlowerType": {
"value": {
"interpretedValue": "dozen roses",
"originalValue": "dozen roses",
"resolvedValues": []
}
},
"PickupDate": {
"value": {
"interpretedValue": "2021-01-04",
"originalValue": "next monday",
"resolvedValues": [
"2021-01-04"
]
}
},
"PickupTime": {
"value": {
"interpretedValue": "17:00",
"originalValue": "5 evening",
"resolvedValues": [
"17:00"
]
}
}
},
"state": "Fulfilled"
},
"originatingRequestId": "9e8add70-4106-4a10-93f5-2ce2cb959e5f"
}
}
```