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:       Welcome to the company . We are conducting a survey of new employees to find out what influenced them to choose our company .  
 Person2:Honestly , the flexible hours were the main attraction for me . The traditional working day doesn't fit in with me lifestyle ; I love being able to tailor my working hours .  
 Person1:        Yes , flextime has definitely been a good change for us . How do you feel about the pay ?  
 Person2:At first it is going to be difficult . During the first three months , I'm on probation . So I won't get sales commissions until after that .  
 Person1:        But there is a big bonus for employees at the end of the probation period .  
 Person2:Yes , I'm looking forward to that ! I just hope my first performance review is favorable .  
 Person1:        One thing you can be sure of your manager will be quite fair . If your job performance is up to par , you shouldn't be afraid of a performance review ,  
 Person2:Great ! Then I suppose I'm looking forward to my first promotion , too . 

informal