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:       Good morning ! I am a rookie in our office .  
 Person2:Good morning ! Welcome to our office !  
 Person1:        Nice to meet you ! My name is Peter Smith .  
 Person2:Nice to meet you too ! I am George Williams .  
 Person1:        This is my first day at work !  
 Person2:Well , hope you will enjoy your first day !  
 Person1:        I am new to the work and I will appreciate your guidance !  
 Person2:I will try my best to assist you if you need any help .  
 Person1:        Thank you . It is very kind of you .  
 Person2:You are welcome . 

informal