diff --git a/convertanything/__init__.py b/convertanything/__init__.py
index 43ac065..63fe1ce 100644
--- a/convertanything/__init__.py
+++ b/convertanything/__init__.py
@@ -11,17 +11,13 @@ def convertanything(
     server="https://api.openai.com",
     llm="gpt-3.5-turbo-16k",
 ):
-    if not isinstance(input_string, str):
-        input_string = str(input_string)
+    input_string = str(input_string)
     openai.base_url = f"{server}/v1/"
     openai.api_key = api_key if api_key else server
     fields = model.model_fields
     field_descriptions = [f"{field}: {fields[field]}" for field in fields]
     schema = "\n".join(field_descriptions)
-    system_message = "Act as a JSON converter that converts any text into the desired JSON format based on the schema provided. Respond only with JSON in a properly formatted markdown code block, no explanations."
-    if not llm.startswith("gpt"):
-        system_message += " After the request is fulfilled, end with </s>."
-    prompt = f"""
+    prompt = f"""Act as a JSON converter that converts any text into the desired JSON format based on the schema provided. Respond only with JSON in a properly formatted markdown code block, no explanations.
 **Reformat the following information into a structured format according to the schema provided:**
 
 ## Information:
@@ -33,8 +29,6 @@ def convertanything(
 JSON Structured Output:
     """
     response = ""
-    if llm.startswith("gpt"):
-        prompt = f"{system_message}\n{prompt}"
     completion = openai.chat.completions.create(
         model=llm,
         messages=[{"role": "user", "content": prompt}],
@@ -42,9 +36,6 @@ def convertanything(
         max_tokens=1024,
         top_p=0.95,
         stream=False,
-        extra_body={
-            "system_message": system_message,
-        },
     )
     response = completion.choices[0].message.content
     if "```json" in response:
diff --git a/setup.py b/setup.py
index 5fa4e64..4eef4e3 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
 
 setup(
     name="convertanything",
-    version="0.0.6",
+    version="0.0.8",
     description="convertanything is a Python package that allows you to convert any text into a structured format according to the schema provided.",
     long_description=long_description,
     long_description_content_type="text/markdown",