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 love breathing fresh air in the suburb places , while sitting in the morning sunshine .  
 Person2:I can't agree more , honey . We need to get away from work from time to time .  
 Person1:        Yeah , just return to nature and feel the thrills of its beauty .  
 Person2:We are nor alone here . So many other families !  
 Person1:        Sure . The sunny days of spring are ideal for outdoor gatherings .  
 Person2:Well , let's go over there and put a blanket on the lawn .  
 Person1:        OK , you go back to our car and fetch the picnic stuff .  
 Person2:Oh , so heavy ! What have you put in here ?  
 Person1:        Nothing special . Food , drinks , and Daniel's kangaroo toys .  
 Person2:Toys ? Why do we need toys for a picnic ?  
 Person1:        He said he would like to be our tour director and he lined up many things to do .  
 Person2:Sure , then . May it really be a day of enjoyment . Other than that , we can also teach him something about science .  
 Person1:        Science ? What are you talking about ? Forget about your science , OK ? It's a picnic !  
 Person2:I mean we can inspire him for a deeper understanding of the natural world .  
 Person1:        I can't agree on that . Just cut it out . Give him a break and don't spoil the day .  
 Person2:Well , OK . you are always right . 

informal