Update locales/en.json

locales/en.json

@@ -87,5 +87,12 @@
     "thank_you": "Thank you",
     "welcome": "Welcome",
     "goodbye": "Goodbye"
+  },
+  "parameter_collection": {
+    "fallback_questions": {
+      "first_ask": "Could you please provide the {caption}?",
+      "second_ask": "Would you mind sharing the {caption}?",
+      "third_ask": "I need the {caption} to continue."
+    }
   }
 }