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:       This is the good life ! We have it good don ’ t you think ?  
 Person2:Yeah of course ! Although , don ’ t you ever wonder what could have been ?  
 Person1:        What do you mean ?  
 Person2:Well , sometimes I think of how things could have turned out if I had done things a little differently .  
 Person1:        For example ?  
 Person2:Like for example , if I hadn ’ t studied architecture , I would have become an artist like I wanted to .  
 Person1:        I see . Yeah now that I think of it , I wouldn ’ t have gotten married if I hadn ’ t moved to this town and met Sally .  
 Person2:You see ! Everything happens for a reason ! We wouldn ’ t even have met if I hadn ’ t been in that car accident ten years ago !  
 Person1:        Well , I have no regrets !  
 Person2:I ’ ll drink to that ! 

informal