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:       There is a new coffee shop opening up down the street .  
 Person2:I hope that they have a good menu . Most coffee shops only have coffee and Danish .  
 Person1:        That's right . You don't drink coffee , do you ?  
 Person2:No , so it's usually boring to join my friends in the afternoon at a regular coffee shop .  
 Person1:        What kind of things would you like to see on the menu ?  
 Person2:Maybe a fruit salad and a few different hot sandwiches at least .  
 Person1:        That shouldn't be too difficult . Since this is a small neighborhood , maybe they will take this suggestion .  
 Person2:Let's try it ! 

formal