Knowledge: Coffee was started in 1890 in France. On the other hand, dairy farming began in 1850 to produce cheese and milk.

Conversation:
Do you know anything about dairy farming?
What I know about dairy farming is that is a type of agriculture that involves the long-term production of milk.
That sounds interesting! I always wondered how butter was made and why humans drink another animals milk!
I don't know the answer, however goats, sheep and camels have been used in dairy farming.
Oh okay. Do you also know when dairy farming started?

Response: Oh, it all started in 1850 with the aim of cheese and milk production.