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:       What problems will exporters face in moving to the foreign market ?  
 Person2:An exporter needs to know the social characteristics of people he is dealing with .  
 Person1:        Like what ?  
 Person2:What do they like or dislike . What languages do they speak , what religions do they follow .  
 Person1:        Reasonable .  
 Person2:Especially he needs to know their behavior , their habits , their way of life and the things they are used to .  
 Person1:        Sometimes people in different countries , or even in different parts of the same country have varying outlooks because of the tribe and culture . 

formal