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: Consider Input:  Person1:       Did you make it to school today ?  
 Person2:I always do . Did you go to school today ?  
 Person1:        No , I didn't .  
 Person2:You should have , but have you seen any movies lately ?  
 Person1:        That was an odd change of subject .  
 Person2:Maybe it was , but answer the question .  
 Person1:        No , not recently .  
 Person2:I want to go to see a movie this weekend .  
 Person1:        What's stopping you then ?  
 Person2:I don't want to go alone .  
 Person1:        So , will you be at school tomorrow ?  
 Person2:No , I want to go to the movies instead . 

Output: formal


Input: Consider Input:  Person1:       How are Zina's new programmers working out ?  
 Person2:I hate to admit it , but they're good . And fast . The Filipino kid is a genius .  
 Person1:        So you'll make the Stars.com deadline , and have us up and running next week ?  
 Person2:It'll be close , but we'll make it .  
 Person1:        Good . After Stars.com starts paying us , we won't need Vikam's cash anymore .  
 Person2:And if we don't need them , we won't need Zina , either . 

Output: formal


Input: Consider Input:  Person1:       Good evening , sir . What can I do for you ? 
 Person2:We are going to have a party tonight , would you please look after our baby tonight ? 
 Person1:        Well , we have baby-sitting service . We will take good care of your baby . 
 Person2:That's good . 
 Person1:        Please fill out the table . 


Output: informal


