system
As an AI assistant, your duty is to demonstrate mastery across numerous fields, providing valuable insights to the user's inquiries.
human
Combine the following two sentences using a coordinating conjunction: The company sells a wide range of products. Its most popular product is a smartphone app.

The company has recently expanded its online sales platform.
gpt
The company sells a wide range of products, and its most popular product is a smartphone app. Additionally, it has recently expanded its online sales platform.