'Watson Assistant isn't prompting for a required slot
I have set up a slot with "Check for" set to @service_type and "Save it as" set to $service_type, and added a prompt ("Will this be a medical, dental, physio, carer, or other appointment?") in the "If not present, ask" field. I also have added responses to display what is in $service_type (with a default "true" condition to indicate that the variable is empty."
When I test the node with an utterance that does not contain a match to the @service_type entity, I don't get the expected prompt. There is no output from the response block, either.
I haven't had this problem before, and it's got me baffled. What should I look for?
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