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:       Is this the Friendship Hospital ? Please send an ambulance to 68 Hu Nan Road .  
 Person2:Is it urgent ? Our ambulances are not enough to meet every call .  
 Person1:        Of course . It's urgent . I think the partie nt is suffering from acute appendicitis . He may die if not treated in time .  
 Person2:All right , we'll come right away .  
 Person1:        ( after a while ... ) Where's the patient ?  
 Person2:He's there in the room . He's very ill .  
 Person1:        Don't worry . We'll put him in the stretcher . You are coming with us ? Step in please .  
 Person2:Carry him into the emergency ward . Here we are .  
 Person1:        Help the patient bathe and change his clothes , nurse . Then bring him into the operating room .  
 Person2:( after a while ... ) I'm his guide . What's the trouble with him , doctor  
 Person1:        He had appendicitis , but is all right now that it was removed . He'll have to rest for a few weeks to recover .  
 Person2:May I send food for him ?  
 Person1:        No , outside food is not permitted .  
 Person2:Can I come round to see him tomorrow ?  
 Person1:        Yes . But first you must observe the visiting hours , It's from 2 to 5 p . m . By the way , consult the nurse before you enter the ward .  
 Person2:Yes . Thank you .  
 Person1:        By the way , you can bring some flowers .  
 Person2:OK .  
 Person1:        Don't worry about him .  
 Person2:When could I take care of him ?  
 Person1:        Our nurse can take good care of him . 

formal