You can refer to this API to learn how to make any part talk using ChatService:
Here is a quick example of how to make a part say something:
local ChatService = game:GetService("Chat")
local talkpart = game.Workspace.TalkPart
do
ChatService:Chat(talkpart, "Hello,", "Red")
wait(1)
ChatService:Chat(talkpart, "World!", "Blue")
wait(1)
ChatService:Chat(talkpart, "Hello World!", "White")
wait(1)
end
Parameter description:
ChatService:Chat(WhichPartThatTalks, “Message Here”, “Color Here”)