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: What ? I don't get it ...
Person2:Many of the slower dances are danced to the lyrics of tragedies . He meant that you turned it into a comedy .
Person1: Well , I'm glad I made everyone happy .
Person2:He meant it in a good way . You added a little spice to the performance .
Person1: I'm glad you guys all have such a good sense of humor . Ha-ha ...
Person2:Of course ! That's why I always say , Eat , drink and be Greek !
informal