Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: I'd like to make a reservation at Pizza Express Fen Ditton. Sentence2: I would like to stay somewhere near the restaurant. Sentence3: I wouls also need a taxi Sentence4: We will be eating at 14:30 on Wednesday. I need the reservation to be for 7 people. Sentence5: Thank you, enjoy your stay! Sentence6: There are two hotels available. Do you have a preference between 0 or 4 stars? Sentence7: Yes I am looking for a moderately priced Italian restaurant. Sentence8: book for 7 people for 5 days from wednesday Sentence9: I want it to take me from Alexander B&B to Pizza Express Fen Ditton to get me there by 14:30. Sentence10: I can do that. When will you be eating? Sentence11: Prezzo is a moderately priced italian restaurant in the west part of town. Would you like to go there? Sentence12: I would be happy to book your taxi. I need the travel time, departure location and arrival destination please. Sentence13: Alexander bed and breakfast is the 4 star rated place. Sentence14: thanks! that will be all for today. Sentence15: Yes, I am also looking for a place to stay. I prefer a guesthouse. Sentence16: Booking was successful. Reference number is : 62UNRH8C . Sentence17: Your taxi is booked. Be expecting a yellow Volkswagen. Please call 07236965666 should you need to reach them. Sentence18: Yes, it has both wifi and parking. Would you like to book a room? Sentence19: I need something in the centre part of town. What do you have? Sentence20: I have two options to choose from. Pizza Express and Pizza Express Fen Ditton are both in the centre of town. Sentence21: 3 stars will be fine thank you Sentence22: I have booked you a reservation at Pizza Express Fen Ditton for 7 people on Wednesday at 14:30. Your reference number is 4DVILHUV . Do you need anything else? Sentence23: What area would you like to stay in? Sentence24: Does it have free wifi? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User