Detailed Instructions: 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'.
Q: Person1: I'll have sole , then .
Person2:All right.How about other guests ?
Person1: The rest of us will have this today's special , please .
Person2:OK .
Person1: I'm sorry but I ordered sole , not the same as the others.Will you change it ?
Person2:I'm afraid we have no more sole .
Person1: Then , I'll have this pork cute instead .
Person2:Certainly.Just a moment , sir .
A:
informal