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:       What's the score ?  
 Person2:The Ukraine team took the lead by 3 to 1 at the end of the first half .  
 Person1:        The Russian team needs to tie the Ukraine to get the pass for the final .  
 Person2:It doesn't seem to be so easy . 

formal