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:       Annie , what is troubling you ? You look unhappy .  
 Person2:A man is pursuing me . He was my schoolmate in college , and he has been carrying a torch for me for three years .  
 Person1:        Do you like him ?  
 Person2:Yes , I do like him .  
 Person1:        Then why are you hesitating ?  
 Person2:You know that I have had a series of miserable relationships . Last summer , I fell in love with John . But the romance blossomed for six or seven weeks , and then wilted .  
 Person1:        One love drives out another . You shouldn't be afraid to start a new relationship .  
 Person2:Maybe you are right . 

informal