Q: 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: Our neighbour ' s tape recorder is so loud that it annoys us to death . I ' Ve made up my mind to cut the electricity off .
Person2:What ? That would be to cut off your nose to spite your face .
Person1: Then what shall we do ?
Person2:Call the police .
A:
informal