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: Can you help me find somewhere to stay in the south? I want it to be moderately priced please. Sentence2: there are 2. one with 4 star another with 3. which one do you prefer? Sentence3: First, may I have the address for the rajmahal restaurant? Then, I want to get from the hotel to the restaurant, please. Sentence4: Either is fine but I would need to have wifi included, this is a business trip. Sentence5: How about the 4 stars one. Sentence6: Rajmahal is located at 7 Barnwell Road, Fen Ditton in the east side. I've also booked your taxi, departing by 21:00. You'll be taking a yellow VW, the number is 07875116115. Sentence7: I have many to choose from. Can you specify the area? Sentence8: thank you that will be all Sentence9: Yes, please. I would also like a taxi to leave the hotel by 21:00. Sentence10: I would like it in the south. Sentence11: Alright, and what is your destination? Sentence12: I have 2 that offer free wifi. One is rated 3 stars, the other is 4. Do you have a preference? Sentence13: Not right now. I'm also looking for a restaurant in the same price range that serves Indian food. Can you help me with that? Sentence14: It looks like there aren't any in the south. Would you like to try a different area? Sentence15: rajmahal is in the west and moderately priced, shall I book you? Sentence16: I'm glad I could assist you today. Have a good rest of the day. Sentence17: No, how about indian food? Sentence18: That would be the Aylesbray Lodge Guest House. Would you like to make a booking? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System