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:       And the cover is great ! The colors are brilliant !  
 Person2:Give me a break . You don't care about the colors . You just like the hot babe on the cover .  
 Person1:        OK , you got me . So , do you have a subscription ?  
 Person2:Of course . I'm currently the subscriber of 10 different fashion magazines .  
 Person1:        So what do you do with all the out-dated issues ?  
 Person2:I guess I'm lending them to you ... 

informal