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: Yes a table for four please. Sentence2: Yes it is. Would you like a reservation there? Sentence3: Is it expensive? Sentence4: What is the address and postcode of the Backstreet Bistoro? Sentence5: I'm sorry the only mexican restaurant is located in the south. Sentence6: I have found one. The Chiquito Restaurant Bar is in the south side of town. Would you like me to make a reservation for you? Sentence7: They are located at 2 Sturton Street City Centre postal cb12qa, have I been able to resolve all of your questions today? Sentence8: We need a table for Tuesday at 12:30 please. Sentence9: Backstreet Bistro looks like a top choice, shall i book you for there? Sentence10: Thank you. Oh wait! It needs to be a table for 2. Sentence11: We have 4 options! Is there a price range you'd like to stay in? Sentence12: Thanks for all your help. That will be all for today. Goodbye. Sentence13: No problem. What day and time were you thinking? Sentence14: Have a great time. Sentence15: Actually, I was looking for a Mexican restaurant in the centre of town. Sentence16: I will go ahead and book that for you. Sentence17: What about a gastropub? Sentence18: I also want to find an attraction called Corpus Christi. Sentence19: i'm looking for a mexican restaurant Sentence20: Corpus Christi is a college in town centre. It is located at king's parade, postcode cb21rh. The entrance fee is 2 pounds. Do you need their phone number? Sentence21: Yes, I'm looking for a restaurant in the expensive price range in the city centre. Mexican is my first choice. If none is available, gastropub is fine. Sentence22: You are booked for Backstreet Bistro for 2 people. Your reference number is P4P2R28V . May I help with something else? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System