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:       Do you believe in god ?  
 Person2:Not at all . I ’ m an agnostic . Do you ?  
 Person1:        I ’ m not sure . Why don ’ t you believe there is a god ?  
 Person2:I think everything has a scientific explanation rather than a theological one .  
 Person1:        I basically believe in science over theology . I mean , I believe in evolution for example . However , there are many things that science hasn ’ t explained yet .  
 Person2:I ’ m sure that science will explain everything eventually . I think that the strangest thing about religion is that so many religions people act in ways that their religion claims are wrong .  
 Person1:        For example ?  
 Person2:Religions preach tolerance , but many wars are caused by intolerant religious fanatics .  
 Person1:        Yes . Such people don ’ t appear to be acting in accordance with their religious beliefs . 

formal