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:       Jessica is going back to Holland next week . I've been thinking a lot about what to give her as a parting gift , but I still have no clue .  
 Person2:Is that the girl you spent almost every weekend with ?  
 Person1:        Yeah , that's her . We had a lot of wonderful times together . She is really a special friend , and I want to get her something meaningful .  
 Person2:I am not good at picking gifts . Maybe you can ask if there's anything she needs to make it easier ?  
 Person1:        I don't think so . That way it would lose all the charm . I want it to be a surprise . I want to show her that I care about her and I hope our friendship will last .  
 Person2:Yeah , that's nice .  
 Person1:        Hmm , I think I've got an idea . Maybe I can get her an ever-green plant to take back home .  
 Person2:A plant ? That's creative . I'm sure ever time she waters it she'll think of you . But there is a problem . Do you think it'll be able to get through the customs ?  
 Person1:        I hope so . I'll make sure to get a small one so she can put it into her suitcase . I hope it won't cause her trouble at the border .  
 Person2:I don't know . I think the idea of a plant going across borders with a friend is really exciting but maybe seeds would be safer . You don't want to get her in trouble . 

informal