You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. You are required to assign a label 'formal' if there is an absence of emotion and a presence of questions anywhere within the conversation. If such pattern is not found assign the label 'informal'.

Person1: Susan , Did you know the four ugliest women in ancient China ?
Person2:No , I only know four great beauties of China .
Person1: There were some famous ugly women in history .
Person2:Yeah ? Were they famous because of the ugliness ?
Person1: Though they were ugly , they had great virtue .
Person2:Then who were they ?
Person1: Mo Mu , Thong Lichen , Meng Gang and Ran Nv . They were well respected .
Person2:It seems that the inner beauty is also important .
Person1: Sometimes the inner beauty is more beautiful .
formal