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 like traveling , Kathy ?  
 Person2:I like traveling for pleasure to get places for vacation for instance . But I don ’ t like traveling to work , waiting for buses , or ...  
 Person1:        Or getting stuck in traffic jams when you ’ re driving .  
 Person2:Exactly . 

formal