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:       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 . 

formal