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:       Why are you going out with Andy ?  
 Person2:Because I like him .  
 Person1:        Me , too . I think he ’ s really a shoulder to cry on . 

formal