TASK 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'.
PROBLEM: Person1: Will you bring our bill , please ?
Person2:Yes , certainly . I'll be back in a minute . Here you are
Person1: Thanks.Let me see . I think there's a mistake on the bill here.Would you mind checking , please ?
Person2:Of course , not.Let me check.Oh , you seem bo be correct .
Person1: How about tax and service charge ?
Person2:Only ten percent tax is included in the bill .
Person1: Then one hundred U . S . dollars covers everything , doesn't it ?
Person2:It sure does .

SOLUTION: informal

PROBLEM: Person1: Good afternoon.Swiss Airline.Miss Grown speaking . Can I help you ?
Person2:Yes . I'd like to make a reservation to Los Angeles on Sep . 19th .
Person1: Just a moment , please . Let me check for you . ( A moment later ) Thank you for waiting . I am sorry but our flights are fully booked on that day.The next available flight leaves at 4:00 pm on 20th . Shall I reserve you a seat on it ?
Person2:Yes , please , thank you .

SOLUTION: formal

PROBLEM: Person1: Can you give me a hand ?
Person2:Of course .

SOLUTION:
informal