Update phrase_mappings.json

phrase_mappings.json

@@ -3,7 +3,8 @@
     "niaje": "What's up?",
     "vipi bro": "How's it going, bro?",
     "mambo vipi": "How are things?",
-    "Sasa": "What's up?",
+    "Sasa {name}": "Hello {name}?",
+    "Sasa": "Hello",
     "sasa hivi": "Right now?",
     "habari gani": "How are you?",
     "shikamoo": "Respectful greetings",