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:       Hi , Michelle . Do you need to use the photocopier ?  
 Person2:Oh , hi Jeremy . No please , go ahead . So how are you , Jeremy ? I was talking to Linda about you only last week .  
 Person1:        Oh , I'm fine , thanks . I'm super busy with work actually . Did you hear about the Lawson contract ?  
 Person2:No , tell me more .  
 Person1:        Well , I was discussing the contract with Bill and he said that they met the head of Lawsons last week .  
 Person2:And .  
 Person1:        And hopefully they are going to confirm the deal on Wednesday , fingers crossed .  
 Person2:That's great news , Jeremy . Congratulations ! Anyway , I must get back , but give my regards to your wife Monica .  
 Person1:        I will , Michelle . Speak to you soon . 

informal