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:       When in Rome , do as the Romans do , they say .  
 Person2:What do the Romans do ?  
 Person1:        They live in Rome , of course , and go to work by car or bus . But sometimes it takes too long that way because of the traffic jams , so they walk .  
 Person2:In other words , the Romans do what everyone else does .  
 Person1:        Yes , but they do it differently . Everything is different .  
 Person2:What do you mean ?  
 Person1:        Well , the climate's different for a start . It doesn't rain so much as it does in England . The sun shines more often .  
 Person2:I envy them the sun .  
 Person1:        I know . You hate the rain , don't you ?  
 Person2:I certainly do .  
 Person1:        And a Roman really Ioves life . Eye knows how to enjoy himself .  
 Person2:They always eat spaghetti and drink wine , don't they ?  
 Person1:        Not always . But they like a good meal . Lots of tourists go to Rome just for the food , you know .  
 Person2:Really ? How much does it cost to fly to Rome ?  
 Person1:        I don't know exactly , but it costs a lot of money . 

informal