Simply a smile is great. Or some kind of physical contact.
Sometimes politeness laid on thick can come across phoney or almost like a stab. "You're so welcome, dear. It's no problem at all."
It really depends on how it is said.
Lots of Canadians go overboard. Sometimes it's a real bitch trying to get away from a situation gracefully.
I have certain family who have mastered the use of politeness as a barb to a fine art. Often, the "You're welcome." is followed by a 'compliment' with a self-deprecating add-on.
"You're welcome. There is no way I could wear those pants bc of my large butt, but you being so thin, why, I don't see why you shouldn't have them."