The fallback endpoint can be used to configure a default fallback process in the case that the user’s question was unanswered. For example, if you are building a domain about order management but the user inputs questions which are irrelevant or unhandled, you may wish to defer them to a quick wikipedia search for their question. Note that we have provided an entire fallback sample agent to demonstrate this feature. Such fallbacks can significantly improve the user experience.
Below is an example that illustrates of to render a set of wikipedia articles as a fallback.
Example:
const _ = require('lodash')
const wikipedia = require('./wikipedia')
module.exports.main = async (params) => {
let question = params.input['@question']
let articles = await wikipedia.search(question)
if (_.isEmpty(articles))
return { output: null }
else
return {
output: {
name: 'wikipedia:ArticlesMessage',
type: 'data',
tags: ['fallback'],
data: {
name: 'wikipedia:Articles',
data: articles,
text: 'The following article might be relevant to your question.'
}
}
}
}