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:       Where do you want to go ?  
 Person2:I am going to the Capital Hotel .  
 Person1:        Get in . I will take you there .  
 Person2:About how much it will cost ?  
 Person1:        $ 50 .  
 Person2:On the meter ?  
 Person1:        Ye , of course .  
 Person2:OK.let ' s go . 

formal