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:       What should I prepare for the recruitment fair ?  
 Person2:You should wear a formal dress and be confident .  
 Person1:        What application materials should I take ?  
 Person2:You should take several resumes and some copies of your graduate diploma . 

formal