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:       This man is your fiance , Dolly ?  
 Person2:Yeah , how do you like him ?  
 Person1:        He's handsome .  
 Person2:Can you give me a touch of his character ?  
 Person1:        He's outgoing and honest , but sometimes he's a bit conservative . 

formal