diff --git a/src/runtime-three/runtime-interaction-system.ts b/src/runtime-three/runtime-interaction-system.ts
index 172ba8f1..ee090717 100644
--- a/src/runtime-three/runtime-interaction-system.ts
+++ b/src/runtime-three/runtime-interaction-system.ts
@@ -32,6 +32,7 @@ export interface RuntimeInteractionDispatcher {
   stopAnimation(instanceId: string, link: InteractionLink): void;
   playSound(soundEmitterId: string, link: InteractionLink): void;
   stopSound(soundEmitterId: string, link: InteractionLink): void;
+  startDialogue(dialogueId: string, link: InteractionLink): void;
   dispatchControlEffect?(effect: ControlEffect, link: InteractionLink): void;
 }
 
@@ -414,6 +415,9 @@ export class RuntimeInteractionSystem {
         case "stopSound":
           dispatcher.stopSound(link.action.targetSoundEmitterId, link);
           break;
+        case "startDialogue":
+          dispatcher.startDialogue(link.action.dialogueId, link);
+          break;
         case "control":
           throw new Error(
             `Runtime control action ${link.action.effect.type} could not be dispatched because the runtime dispatcher does not support control effects.`