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 would appreciate it if you could go to the store for me .  
 Person2:No problem . What do you want me to get ?  
 Person1:        Here's a list with a few things that I need you to get .  
 Person2:Did you forget to put anything on the list ?  
 Person1:        I don't think I forgot anything .  
 Person2:Would you like me to go anywhere else for you ?  
 Person1:        If you don't mind , I would appreciate it if you would pick up my prescription .  
 Person2:Has your prescription been filled yet ?  
 Person1:        Someone at the pharmacy called and told me it was ready .  
 Person2:Sure , I'll go get it for you .  
 Person1:        Thank you .  
 Person2:Anything for you . 

informal