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:       We ’ Ve got a lot of work to do now , but take your time over this project . We don ’ t want to make any mistakes .  
 Person2:Ok . I should have it finished by Friday afternoon . Then I can check those account over the weekend . We need to have them finished by Monday , right ?  
 Person1:        That ’ s right . We ’ ll finish them just in time . The Macy project can wait for the time being . We need to spend several days on that project , but it isn ’ t due to be finished until the end of the month , so we have plenty of time to get it done .  
 Person2:Some next week on , we should be in less of a rush .  
 Person1:        I ’ m going to give everyone on the team an extra day off . Everyone deserves it .  
 Person2:Don ’ t say that yet . A new project could suddenly appear .  
 Person1:        That ’ s true . Right . I ’ m going back to the meeting . It ’ s been going on for hours and there ’ s no indication that it ’ ll end soon .  
 Person2:Carol said that she would spend some time checking that everyone is up-to-date with their work .  
 Person1:        Good . I have to go right now . I really hope this meeting doesn ’ t last too long .  
 Person2:They usually go on for ages .  
 Person1:        I ’ ll stop by if I have time later . Make sure everyone knows that we must stick to the deadlines .  
 Person2:I will . Enjoy your meeting ! 

informal