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: Please. To reiterate - I need a table for 8 on Monday at 11:45. Sentence2: Sure, I can help with that. What kind of attraction were you intersted in? Sentence3: Sorry, did you not understand me earlier? I said the restaurant needs to be in the same area as the attraction. Neither of those are in the west. Sentence4: Queens' college costs 2.50 pounds. Their phone number and postcode are 01223335511 and cb39et0. Do you need anything else? Sentence5: just give me your best picks Sentence6: Thank you - and sorry for any confusion. I appreciate your patience. Goodbye. Sentence7: How about a French restaurant? Sentence8: Yes, please also make a reservation for 8 people. Sentence9: Unfortunatley, I couldn't find european food. Sentence10: no we dont have such a place around. can i suggest a good place? Sentence11: If there is no such restaurant, how about one that serves european food Sentence12: cambridge lodge restaurant will suit your needs and is located in the west. I'm sorry about before, there must have been something wrong with my computer. Can I book it? Sentence13: I have Restaurant two two in the north of town and Cote in the centre. Which would you prefer? Sentence14: I would like to visit an attraction in the west area of town? Sentence15: Yes please. I also need a restaurant for a nice, expensive meal. Near the college, at least in the same area. Sentence16: We have several available. What type of food are you interested in? Sentence17: No worries, goodbye. Sentence18: Monday at 11:45 please. Sentence19: sure, what day a time do you want your reservation? Sentence20: I have heard a lot about molecular gastronomy food and want to try it, any places like that around? Sentence21: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 5KFVOKBO . Sentence22: I am looking for places to go in town in the west and I need the postcode, entrance fee and phone number. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System