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's the matter with you , Paul ?  
 Person2:I'm not feeling well . I think I'm having a cold .  
 Person1:        Looks like it.You need to drink a lot of water and take a good rest .  
 Person2:Yeah , I will . 

formal