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:       Let's see now . Cut the potatoes into small cubes .  
 Person2:Yes , but don't cut them yet . Wait until they cool . Where is the big plastic bowl ?  
 Person1:        On the bottom shelf in the cupboard under the sink .  
 Person2:What's Donna like , by the way ?  
 Person1:        Donna ? Well . She is about 20 . She is very lovely and I think you will like her . What about Paul ?  
 Person2:Oh , Paul is very easy-going and friendly .  
 Person1:        Could you get me the pepper from the cupboard ?  
 Person2:Yes , sure . Which cupboard is it in ?  
 Person1:        It's in the small one beside the cooker .  
 Person2:There is no pepper here .  
 Person1:        Oh , there Isn't ? Oh , no . 

informal