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's Ron Marston like , Pauline ?
Person2:He's awful ! He telephoned me four times yesterday , and three times the day before yesterday . He telephoned the office yesterday morning and yesterday afternoon . My boss answered the telephone .
Person1: What did your boss say to him ?
Person2:He said , Pauline is typing letters . She can't speak to you now ! " Then I arrived home at six o'clock yesterday evening . He telephoned again . But I didn ' t answer the phone !
Person1: Did he telephone again last night ?
Person2:Yes , he did . He telephoned at nine o'clock .
Person1: What did you say to him ?
Person2:I said , This is Pauline's mother . Please don ' t telephone my daughter again !
Person1: Did he telephone again ?
Person2:No , he didn't !
informal