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:       Hi , Bob , everything okay ?  
 Person2:more or less . There's just one thing bothering me .  
 Person1:        oh ? What's that ?  
 Person2:well , you know I have some students studying for their master's degree . One of them tried to give me a gift that kind made me uneasy .  
 Person1:        what gift ?  
 Person2:it's an Egyptian carpet . The student came to my office the other day and brought the carpet to show his gratitude . Seeing what gift was , I was really uncomfortable . I mean it's too expensive a gift  
 Person1:        you refused the gift ? That's terrible .  
 Person2:I know , but I really can't accept such an expensive gift . I explained to him why , but he seemed really upset about it . I think he might have taken it the wrong way .  
 Person1:        perhaps . He probably thinks you considered the gift a bribe for a higher grade .  
 Person2:that's what I am worried about . I do understand the respect attached with the gift and I am honored . But I really don't think it's proper for a student to spend a fortune on a gift for a professor . 

formal