diff --git a/README.md b/README.md
index f1c3a59..1436c02 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,12 @@
     <br>
 </p>
 
+
+
+https://github.com/user-attachments/assets/982e8733-f7a7-468d-940c-5c96f411f527
+
+
+
 <!-- <hr /> -->
 
 
@@ -325,4 +331,4 @@ If you have used code or data from this repository, please cite the following pa
     url = "https://aclanthology.org/2024.findings-acl.96",
     pages = "1663--1678",
 }
-```
\ No newline at end of file
+```
diff --git a/benchmark/user_simulator.py b/benchmark/user_simulator.py
index 6e6a2dd..9ecce17 100644
--- a/benchmark/user_simulator.py
+++ b/benchmark/user_simulator.py
@@ -59,9 +59,9 @@ def user_simulation_chain(user_engine: str, user_temperature: float, language: s
     )
 
 
-async def simulate_dialog(dialogue_inputs, args) -> list[DialogueTurn]:
+async def simulate_dialogue(dialogue_inputs, args) -> list[DialogueTurn]:
     """
-    Simulate one dialog
+    Simulate one dialogue
     """
     user_character = random.choice(user_characteristics)
     chatbot, dialogue_state = create_chain(args)
@@ -128,7 +128,7 @@ def repeat_dialogue_inputs(dialogue_inputs, target_num_dialogues):
     return dialogue_inputs
 
 
-def main(args):
+async def main(args):
     topics = []
     if args.mode == "topic":
         dialogue_inputs = []
@@ -162,9 +162,10 @@ def main(args):
         raise ValueError("Unknown mode: %s" % args.mode)
 
     all_dialogues = []
-    for di in tqdm(dialogue_inputs, desc="Dialogues"):
-        dialogue_state = asyncio.run(simulate_dialog(di, args=args))
-        all_dialogues.append(dialogue_state)
+    for i in tqdm(range(0, len(dialogue_inputs), args.batch_size), desc="Dialogue Batches"):
+        batch = dialogue_inputs[i:i+args.batch_size]
+        batch_results = await asyncio.gather(*[simulate_dialogue(di, args=args) for di in batch])
+        all_dialogues.extend(batch_results)
 
     make_parent_directories(args.output_file)
     with open(args.output_file, "w") as output_file:
@@ -237,7 +238,13 @@ def main(args):
         "--num_turns",
         type=int,
         required=True,
-        help="The number of turns in each dialog",
+        help="The number of turns in each dialogue",
+    )
+    parser.add_argument(
+        "--batch_size",
+        type=int,
+        default=10,
+        help="The number of dialogues to simulate in parallel",
     )
     parser.add_argument(
         "--language",
@@ -259,4 +266,4 @@ def main(args):
             level=logging.INFO, format=" %(name)s : %(levelname)-8s : %(message)s"
         )
 
-    main(args)
+    asyncio.run(main(args))
diff --git a/pipelines/utils.py b/pipelines/utils.py
index 345b7dc..51b6251 100644
--- a/pipelines/utils.py
+++ b/pipelines/utils.py
@@ -415,7 +415,7 @@ def extract_year(title, content):
         content = title + " | " + content
     years = []
     year_pattern = r"\d{4}"
-    year_duration_pattern = r"\b\d{4}[--–]\d{2}\b"
+    year_duration_pattern = r"\b\d{4}[-–]\d{2}\b"
     year_to_pattern = r"\b\d{4} to \d{4}\b"
     # extract "1990 to 1998" before spacy because spacy would split it to 1990 and 1998
     re_year_tos = re.findall(year_to_pattern, content)
diff --git a/public/demo video.mp4 b/public/demo video.mp4
new file mode 100644
index 0000000..b0ee985
Binary files /dev/null and b/public/demo video.mp4 differ