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:       It is obvious that their government is nursing the hope of having all other countries over a barrel and bring them completely under their control . 
 Person2:It ’ s a typical of them to do so . 
 Person1:        What can we do ? 
 Person2:We must keep developing our economy and unite with other developing countries to fight against it . 

formal