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:       Well , Randy , I'd say you've got a bad case of the flu . The main thing to do is get plenty of rest and drink lots of liquids . I'll prescribe something for that throat .  
 Person2:Thanks , doctor . Is there anything I can take for this headache ?  
 Person1:        Some aspirin or Panadol should help . You can pick some up at the pharmacy when you go to fill your prescription .  
 Person2:Okay .  
 Person1:        Goodbye , Randy . Take care . 

formal