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 is your vacation going to start ? 
 Person2:I'll be leaving on the fifth of August for the vacation 
 Person1:        Oh , that's only a few days from now ! How many weeks are you going to be taking ? 
 Person2:I'm taking two weeks now . but I want to save the other week and take it sometime during the winter . 
 Person1:        Where are you going now . 
 Person2:To the beach 
 Person1:        Have you made your hotel reservation yet ? 
 Person2:Oh , I don't need to do that . I'll be staying with friends 
 Person1:        You're lucky . It's hard to find a place to stay at the beach in August 
 Person2:Just think , in a few days , I'll be swimming and lying in the sun and just taking it easy . 

informal