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:       Do you mind if I get a lift in your car , please ?  
 Person2:I don ’ t see any problem , only the car is a bit old .  
 Person1:        Oh you ’ re so kind !  
 Person2:Get in . 

informal