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:       Hello , this is Sunshine Trading Company . Can I help you ?  
 Person2:Yes . I want to apply for the accountant in your corporation and I think it is not beyond attainment .  
 Person1:        Great . Could you tell me something about cash control ?  
 Person2:Yes , of course . In accounting , cash means all items that are acceptable for depositing in a bank . 

formal