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:       Do you have some good ideas of losing weight ?  
 Person2:First of all , you should pay attention to what you eat . Don't eat too much food with high calories , such as chocolate , ice cream and the like .  
 Person1:        Any more ?  
 Person2:Stay away from fried foods . Fried foods are fried in oil or fat .  
 Person1:        Got it .  
 Person2:Do not be a couch potato . You should do more exercise .  
 Person1:        Well , it seems that I should do some jogging from tomorrow on . 

formal