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:       David , imagine meeting you here ! 
 Person2:Janice , I found you stole my vegetables at four o'clock this morning . Is that true ? 
 Person1:        All right ! I stayed up yesterday and waited for your vegetables . I stole your peaches and flowers . 
 Person2:It is so hard to prevent them from being stolen . I also got something this morning . 
 Person1:        How many vegetables do you steal today ? 
 Person2:I stole many from Fred's farm , and from yours . I planned to have a dog on farm . 
 Person1:        So funny . By stealing , I forgot all my sorrows and pressure from work . 
 Person2:I could not agree with you more . For us , there are so many unhappy things and I am so bored ; however , I got lots of fun from stealing . 
 Person1:        I really want to be far away from the reality now . 
 Person2:But we still need to go back to it . Don't overdo it . 

informal