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:       Hello , this is my claim tag . Can I get my baggage ? 
 Person2:Let me see . En . Here is your baggage . 
 Person1:        Thank you . And where can I get a pushcart ? 
 Person2:Walk ahead a little further . There are plenty of them . 

formal