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 much do you expect to earn ?  
 Person2:I think salary is closely related to the responsibilities of the job . Shall we discuss my responsibilities with your company first ?  
 Person1:        If you are hired , you are in charge of the design of toys that can meet the needs of the American market .  
 Person2:I know it is a crucial position , but I can do it well . So I'm asking for 200,000 Yuan a year as a starting salary .  
 Person1:        Ok . 

formal