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:       I always feel I ’ m left high and dry with nobody to rely on . 
 Person2:Don ’ t be fool . I ’ ll always side with you . 
 Person1:        I appreciate your kindness . 

informal