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:       Good morning , Doctor !  
 Person2:Good morning , Miss Mandy . How are you today ?  
 Person1:        I am not feeling very well . I've got a bad cold .  
 Person2:Have you got a sore throat , too ?  
 Person1:        No , but I've got a headache .  
 Person2:Yes , I see . Go home to bed and take one of these pills every three hours .  
 Person1:        Thank you very much . 

formal