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:       I had a busy morning .  
 Person2:What did you do ?  
 Person1:        I watered all the plants .  
 Person2:You have a lot of plants .  
 Person1:        Then I did my laundry .  
 Person2:That takes some time .  
 Person1:        I took the dog for a walk .  
 Person2:I'll bet he enjoyed his walk .  
 Person1:        I vacuumed the entire house .  
 Person2:That's a lot of work .  
 Person1:        And then I made lunch .  
 Person2:I'll bet you were hungry ! 

formal