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:       Uncle , have a heart , please lend your new car to me . Only once .  
 Person2:Where are you going ?  
 Person1:        I have a big date tonight .  
 Person2:You have got a car , haven ’ t you ?  
 Person1:        Oh , please . Only once lend your new car to me . 

formal