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's it going ?  
 Person2:I'm in a good mood today , actually . How about you ?  
 Person1:        to be honest , I'm a bit fed up .  
 Person2:what's wrong ?  
 Person1:        there's a girl in my company that I really like but I always get shy when she is around .  
 Person2:I see ! Do you want to ask her out ?  
 Person1:        sure , but how ?  
 Person2:you can ask her out for drink after work .  
 Person1:        but for what reasons ? She doesn't even know who I am .  
 Person2:then you've got a lot of homework to do . You need to get her notice first .  
 Person1:        easier said than done .  
 Person2:you can start by meeting her at the bus stop and saying hello to her .  
 Person1:        but I always get tongue-tied when I see her .  
 Person2:that's something you need to overcome . Men should make the first move as most of girls prefer being chased .  
 Person1:        I see . I'll try .  
 Person2:good luck ! 

formal