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: No thank you. But could you please get me the phone number and postcode for Williams art and antiques? Sentence2: You have already been booked at a nearby African restaurant, Bedouin, on Wednesday at 17:00. Are you interested in an additional restaurant? Sentence3: The Bedouin is unusual and expensive. Cote offers the more standard, but elegant French cuisine. Is location a concern? Sentence4: Great, thanks! Is there a restaurant nearby? Sentence5: want to book a table for 8 people at 17:00 on wednesday and I need a reference number Sentence6: I'm looking for a restaurant that's on the pricier end, I want to impress some people. Is there something you'd recommend? Sentence7: That would be perfect. What do you recommend? Sentence8: It was a pleasure serving you, goodbye! Sentence9: Booking was successful. The table will be reserved for 15 minutes. Reference number: PLFTP5GS . Sentence10: There are many attractions in that area. Do you want something that is free to the public? Sentence11: I'm also looking for an attraction near the restaurant. Do you recommend anything? Sentence12: Of course! Williams Art and Antiques is located in the city centre, postcode cb12lj. You can reach them at 01223311687. Can I help you with anything else? Sentence13: No thank you that will be all Sentence14: Williams art and antiques is free to the public. Located in the centre and it is a museum. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System