问题
Hi I am creating slot filling chatbot where I would like to ask as much open question as possible at the beginning to make my flow the most similar to the normal conversation.
How can I achieve two types of prompts one general to specify which parameter is missing and if user will not fill it in a correct way then i would like to suggest him answers by using suggestion chips? (Blue on the flow diagram above)
回答1:
AFAIK, your requirements can only be implemented in webhook code; the Dialogflow configuration is not enough to set up this kind of dialog. A webhook is necessary - however, some resources discourage that altogether. Go and read The different types of Dialogflow (API.AI) slot filling tasks carefully.
If you decide to start using webhook for slot-filling (this sample webhook implementation is a good starting point), it will:
+----------+ +-------------+ +-------------+
| | ------> | | -----> | |
| User | | Dialogflow | | Webhook |
| | <------ | | <----- | |
+----------+ +-------------+ +-------------+
- receive a request with the recognized intent and entities
- ask follow-up questions (either asking for a missing entity or offering a suggestion if an unsupported value was provided)
Basically, this means that Dialogflow is now used only for natural language understanding (NLU) and the webhook becomes responsible for dialog management.
回答2:
So far as I understand, dialogflow.com has no such provision to define multiple prompts within single intent so either way to do this is to use webhooks for slot-filling. I can see here, https://miningbusinessdata.com/different-types-api-ai-slot-filling-tasks/ that this is not a recommended way of solving your problem & this is because once you enter in webhook, you will have to write your own logic of NLP to handle user responses & understand the context of what user wants to say. So instead of having multiple prompts like what type of vehicle->plane->we don't have this (enter car/truck), you can directly say what type of vehicle (please enter any of this: car/truck) so you don't have to define multiple prompts here & your work will be done. Unless you have car/truck in user says of your intent, it will continue promoting same question.
来源：https://stackoverflow.com/questions/48091538/slot-filling-chatbot-suggestion-chips-in-prompts