Context management
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When you define in , you can set one or more input or output . These contexts are used to limit the scope of specific intents so that they will be triggered only when certain conditions are met.
We’ve already discussed a simple example of a restaurant chatbot, with two different skills triggered by the same utterance – “How much will it be?”. One skill, to calculate the delivery cost, should be triggered only in the context of arranging the delivery order, and another, calculating the reservation cost, should be triggered only when the user is asking about the reservation.
Let’s build this in Dialogflow and Activechat!
We’ll be creating two different intents with the same set of training phrases. The only difference will be the contexts: we’ll set “reservation” as input context for the first one, and “delivery” as input context for another.
“how_much_reservation” intent:
“how_much_delivery” intent:
If you test one of your training phrases in the Dialogflow console, you may be surprised. Even when you type the phrase exactly as it’s entered in the intent definition, Dialogflow does not recognize it and throws “Default Fallback” intent instead. How can it be?
The reason is that we have input contexts set in both of these intents. To make your chatbot able to recognize the “How much will it be?” utterance outside of any of these two contexts, you will need another intent – with the same training phrases but no contexts set.
When you specify input context for the intent, this intent will be triggered only when this context is present!
Here is how this can be done when choosing the skill from the chatbot menu:
Now, when you type “What’s the cost?” in the chatbot, one of your intents will be triggered – depending on what is the current conversation context.
Let’s store the current conversation context in the $context attribute. When you are in the “reservation” skill, it should be set to “reservation” (use the block to set the value), and when your chatbot user switches to the “delivery” skill, set it to “delivery”.
If your “reservation” and “delivery” skills are also triggered by the NLP intent, you can set the context immediately after the opening block in each of these skills.
Don’t forget to pass the context to Dialogflow, adding it to the block settings:
Output contexts from Dialogflow intents are available in the $_nlp_contexts .
For more info on Dialogflow contexts, check the .