Update README.md

README.md

@@ -41,7 +41,9 @@ The Security Protocols Open Repository is a comprehensive collection of security
 
 ### Dataset Structure
 
-Each entry in the dataset contains:
+The dataset is available in two flavours: *instruction* and *conversation*.
+
+Each entry in the instruction dataset contains:
 
 ```json
 {
@@ -49,6 +51,24 @@ Each entry in the dataset contains:
 }
 ```
 
+Each entry in the conversation dataset contains:
+
+```json
+{
+  "messages": [
+    {
+      "role": "user",
+      "content": "Protocol Name\n\nProtocol Specification\n\nSecurity Requirements"
+    },
+    {
+      "role": "assistant",
+      "content": ""
+    }
+  ]
+}
+
+```
+
 The protocol specifications use a standard notation:
 - `A, B, S`: Principals (participants)
 - `Na, Nb`: Nonces (random values)