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: This is 911 .
Person2:Send an ambulance fast ! My husband is having a heart attack !
Person1: Slow down and tell me your address .
Person2:I live on 1177 Oak lane in Smithfield . Oh , hurry , I don't know what to do !
Person1: An ambulance is on its way right now . They should be there any minute . Are you close to him right now ?
Person2:yes , yes , he's right here by me .
Person1: Is he breathing ?
Person2:Yes , he's breathing , but he's not conscious ! Oh , please hurry !
Output:
formal