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:       Hi , Charles . What's the matter ? 
 Person2:Oh ! ! My car isn't working . I'm waiting for a tow-truck . 
 Person1:        Do you have a ride home ? 
 Person2:Yes , my wife is coming to get me . 
 Person1:        That's good . Do you live near here ? 
 Person2:No , we live in the suburbs . What about you ? 
 Person1:        I live downtown , with my parents . 
 Person2:Do you have a car ? 
 Person1:        I don't need a car . I walk to work . 
 Person2:You're lucky ! 

informal