cheerfulness

I add it.

私は加えます

I add cheerfulness to the conversation.

私は会話に愉快さを加えます

I add cheerfulness to the conversation in the canteen.

私は食堂で会話に愉快さを加えます

I add cheerfulness to the conversation in the canteen during the lunch break.

私は昼休みに食堂で会話に愉快さを加えます

I add cheerfulness to the conversation in the canteen with my coworkers during the lunch break.

私は同僚と昼休みに食堂で会話に愉快さを加えます