Definition: 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'.
Input: Person1: Have you ever run into a person who tries bleed you white ?
Person2:I am always on the look out for such girls .
Person1: I hear that some guys splash all their money about on them .
Person2:Mark is one of them . He has trouble with a girl who turned out to be a dead beat .
Output:
formal