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 do you think about half day kindergarten for Stacey ?  
 Person2:We could try it for the first few weeks and see if she likes it .  
 Person1:        I just think it will be a little difficult for her to be away from home for so long right off the bat .  
 Person2:You have a good point . She hasn't really ever been away from home for longer than a few hours .  
 Person1:        I think she is really going to like her teacher though .  
 Person2:Yes , they seemed to click at the meeting the other day .  
 Person1:        Did you happen to notice if she was interested in any of the other kids ?  
 Person2:No , but I did notice that she was very interested in the art supplies ! 

informal