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:       Hey , Joe ! Where have you been these past few days ?  
 Person2:I ’ Ve been busy with a first aid course that I started about a week ago at the Red Cross .  
 Person1:        Cool ! I ’ Ve always wanted to do something like that ! Have you learned anything useful ?  
 Person2:For sure ! I mean we ’ Ve learned how to apply pressure to stop bleeding , how to check for a pulse , and even how to apply CPR !  
 Person1:        Have you treated any real emergencies ?  
 Person2:Well , they took us along with some paramedics.There was this guy who fell off his motorcycle and suffered a concussion as well as a couple of compound fractures . His wounds were pretty serious so they had to rush him to the hospital . It was intense !  
 Person1:        I can imagine ! I tend to faint when I see blood , so I think I won ’ t be taking up a course like that anytime soon ! 

formal