diff --git a/python/07-build-copilot/api/app/models/completion_request.py b/python/07-build-copilot/api/app/models/completion_request.py
index 84eb5a0..0425038 100644
--- a/python/07-build-copilot/api/app/models/completion_request.py
+++ b/python/07-build-copilot/api/app/models/completion_request.py
@@ -1,4 +1,5 @@
 from pydantic import BaseModel
 
 class CompletionRequest(BaseModel):
-    message: str
\ No newline at end of file
+    message: str
+    chat_history: list = []
\ No newline at end of file
diff --git a/python/07-build-copilot/api/app/models/product.py b/python/07-build-copilot/api/app/models/product.py
index 508d101..88f65c0 100644
--- a/python/07-build-copilot/api/app/models/product.py
+++ b/python/07-build-copilot/api/app/models/product.py
@@ -1,11 +1,14 @@
+import uuid
 from pydantic import BaseModel, Field
 
 class Product(BaseModel):
-    id: str = Field(default=None, alias="id")
-    category_id: str = Field(alias="categoryId")
-    category_name: str = Field(alias="categoryName")
-    sku: str
-    name: str
-    description: str
-    price: float
-    embedding: list = []
+    id: str = Field(str(uuid.uuid4()), description="Unique identifier for the product")
+    category_id: str = Field(..., description="Unique identifier for the product's category")
+    category_name: str = Field(..., description="A comma-separated string containing the names associated with the product's category")
+    sku: str = Field(..., alias="sku", description="Stock Keeping Unit (SKU) for the product")
+    name: str = Field(..., alias="name", description="Name of the product")
+    description: str = Field(..., alias="description", description="Description of the product")
+    price: float = Field(..., alias="price", description="Price of the product")
+    discount: float = Field(None, alias="discount", description="Discounted price of the product")
+    sale_price: float = Field(None, alias="salePrice", description="Sale price of the product")
+    embedding: list = Field([], alias="embedding", description="Vector representation of the product description")