How to check if certain word is used in chat?

game.Players.PlayedAdded:connect(function(player)	
	player.Chatted:connect(function(msg)
		local function saidWord(message, word)
			return string.match(string.lower(message), string.lower(word))
		end
	       	if msg == saidWord(msg, "hello") then 
			print(msg)
	        end
	end)
end)

I have this script, so when a player chats something, and if that something is 'Hello', then it will print the message in the output. What I want though is sometimes players say 'Hello, how are you', or something like that, where they say 'Hello', but they add more to the message. Is it possible to pick it up if the word is used in a sentence.

EDIT

It does not print the message unless you say 'hello'