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:       There are something wrong with my computer .  
 Person2:Really , what's wrong with it ?  
 Person1:        The computer doesn't work when I push the power cotton .  
 Person2:Oh , do you use your computer often ?  
 Person1:        Yes , I don't know why it doesn't work this time .  
 Person2:Don't worry . Have you got receipt with you ?  
 Person1:        Yeah !  
 Person2:We'll go to your house and repair it on Tuesday . Ok ?  
 Person1:        OK , I'll expected you around 2 o'clock ?  
 Person2:See you then . 

formal