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:       what do you do when you see a homeless person on the streets begging for money ?  
 Person2:I never really give them money because I don't want to contribute to their addictions .  
 Person1:        homeless youth can easily become involved with drugs and prostitution . Do you do anything to help them ?  
 Person2:I usually ask them if they want some food and then give them something to eat . I figure that if they're homeless , they're probably hungry .  
 Person1:        that's a good idea . Do they usually accept the food ?  
 Person2:almost always . However , sometimes they get mad at me for not giving them any cash .  
 Person1:        it's sad how more and more young people are sleeping on the streets in London now .  
 Person2:the cost of living in London is just too high for most people .  
 Person1:        it's true . The economy is in a bit of mess at the moment .  
 Person2:did you know that few people can pay the rent on minimum wage , let alone pay for food and other living costs ?  
 Person1:        there just isn't enough affordable housing to go around . If only the housing cost would drop , fewer people would be in financial trouble .  
 Person2:added to that is the high unemployment rate right now .  
 Person1:        something's got to change---and it's got to happen soon .  
 Person2:politicians like to ignore the problems of the working class . They like to focus on making life easier for the upper class .  
 Person1:        I can only hope that one day they will change . 

formal