user: Who is Bill Gates?

assistant: Bill Gates is an American business mogul and co-founder of Microsoft.

user: What is the largest city in the United Kingdom?

assistant: London is the largest and capital city of the United Kingdom.

user: What is data science?

assistant: Data science is a field of study that deals with using mathematics like statistics and large scale computing to build algorithms and models that explain information or predict outcomes and insights from structured, unstructured, and semi-structured.  Data scientists spend 80% of their time doing exploratory data analysis and about 20% of their building the model and hyper parameter tuning.