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'.
Q: Person1: It sounds that you have a high opinion of him .
Person2:He is an all-right guy . I have no bone to pick with him .
Person1: Birds of feather flock together .
Person2:But he is not a fine wether friend who could sell you down the river .
Person1: You cannot judge a person that way . I have a hunch that he is a sly dog .
Person2:Depends on with whom . He may be doing things on the sly , but he is honest with me . I trust him .
Person1: You can never tell . He might do you in when he sees an angle in doing it .
A:
informal