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:       How wonderful it is to be in love ! It's love at first sight ! Oh . he's my Romeo !  
 Person2:Hey , Julie . How's it going ?  
 Person1:        Oh , Mary . You've surprised me !  
 Person2:Who were you talking to ?  
 Person1:        Um — I was just thinking aloud .  
 Person2:You look so happy . I see a twinkle in your eyes .  
 Person1:        Come off it , Mary .  
 Person2:Oh , you have a crush on someone , don't you ? Maybe those are wedding bells in your eyes !  
 Person1:        You certainly do like teasing me , Mary . Well I'm in love with someone . The question is , how do I get his attention ?  
 Person2:Well , that's easy . Walk up to him and kiss him .  
 Person1:        I guess I asked the wrong person . 

informal