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 went shopping without my umbrella yesterday morning .  
 Person2:Yesterday morning was beautiful i thought the sunning was going to continue .  
 Person1:        So did i . that's why i didn't take my umbrella . i got cold in the rain in the afternoon.it was raining cats and dogs .  
 Person2:I know . i could not believe it when i got hit by that storm.it was pouring with rain all afternoon .  
 Person1:        We really have some miserable weather sometime . i wish i would live somewhere which were sunning all year round .  
 Person2:If it was sunning all year round there would be drought.you probably would not like it either .  
 Person1:        I guess you are right . maybe i just wish the weather could be a little more predictable .  
 Person2:The weather forecasters are not good at predicting the weather would be like.our weather is so changeable . 

informal