diff --git a/README.md b/README.md
index 47c1f87..10cc2e5 100644
--- a/README.md
+++ b/README.md
@@ -35,8 +35,10 @@ options:
   "durationTicks": 500, // time of experiment
   "messageSizeRange": [200, 500], // the size range clients will be sending messages in
   "denimProbability": 1, // how probable a client will be to send a denim message
+  "replyProbability": [0.5, 0.95], // how probable a client will be to reply to a message
   "sendRateRange": [1, 5], // how fast a client will send a message, each client gets a random send rate, faster send rate will have less data in the messages and vice versa
-  "startEpoch": 10, // seconds to start, when all clients are ready
+  "replyRateRange": [1, 2], // how fast a client will reply to a message
+  "staleReplyRange": [1, 1], // ticks before a client wont reply to a message
   "report": "report.json" // final report is saved to report/<name>.json
 }
 ```
diff --git a/src/sam_dispatcher/state.py b/src/sam_dispatcher/state.py
index 105ee61..6cebcd8 100644
--- a/src/sam_dispatcher/state.py
+++ b/src/sam_dispatcher/state.py
@@ -20,6 +20,9 @@ class Scenario(BaseModel):
     message_size_range: Tuple[int, int] = Field(alias="messageSizeRange")
     denim_probability: float = Field(alias="denimProbability")
     send_rate_range: Tuple[int, int] = Field(alias="sendRateRange")
+    reply_rate_range: Tuple[int, int] = Field(alias="replyRateRange")
+    reply_probability: tuple[float, float] = Field(alias="replyProbability")
+    stale_reply_range: tuple[int, int] = Field(alias="staleReplyRange")
     report: str = Field(alias="report", default="report.json")
 
 
@@ -34,9 +37,12 @@ class Client(BaseModel):
     client_type: str = Field(alias="clientType")
     message_size_range: Tuple[int, int] = Field(alias="messageSizeRange")
     send_rate: int = Field(alias="sendRate")
+    reply_rate: int = Field(alias="replyRate")
     tick_millis: int = Field(alias="tickMillis")
     duration_ticks: int = Field(alias="durationTicks")
     denim_probability: float = Field(alias="denimProbability")
+    reply_probability: float = Field(alias="replyProbability")
+    stale_reply: int = Field(alias="staleReply")
     friends: Dict[str, Friend]
 
 
@@ -201,6 +207,9 @@ def _init_client(
         tick_millis: int,
         duration_ticks: int,
         denim_prob: float,
+        reply_prob: float,
+        reply_rate: int,
+        stale_reply: int,
     ):
         return Client(
             username=username,
@@ -210,6 +219,9 @@ def _init_client(
             tickMillis=tick_millis,
             durationTicks=duration_ticks,
             denimProbability=denim_prob,
+            replyProbability=reply_prob,
+            replyRate=reply_rate,
+            staleReply=stale_reply,
             friends=dict(),
         )
 
@@ -225,6 +237,9 @@ async def init_state(self):
             for _ in range(total_clients):
                 username = str(uuid.uuid4())
                 msg_range, send_rate = self._get_sizes_and_rate()
+                reply_rate = random.randint(*self.scenario.reply_rate_range)
+                stale_reply = random.randint(*self.scenario.stale_reply_range)
+                reply_prob = random.uniform(*self.scenario.reply_probability)
                 clients[username] = State._init_client(
                     username,
                     self.scenario.type,
@@ -233,6 +248,9 @@ async def init_state(self):
                     tick_millis,
                     duration_ticks,
                     self.scenario.denim_probability,
+                    reply_prob=reply_prob,
+                    reply_rate=reply_rate,
+                    stale_reply=stale_reply,
                 )
 
             self.clients = clients
diff --git a/tests/test_state.py b/tests/test_state.py
index d59794a..efb1480 100644
--- a/tests/test_state.py
+++ b/tests/test_state.py
@@ -22,6 +22,9 @@
         messageSizeRange=(10, 20),
         denimProbability=0.1,
         sendRateRange=(1, 5),
+        replyRateRange=(1, 2),
+        replyProbability=(0.5, 0.95),
+        staleReplyRange=(1, 1),
     ),
 ]