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: The only restaurant that fits that criteria is the missing sock. Can I try a different reservation time for you? Sentence2: Of course, would a guesthouse be OK? Sentence3: carolina bed and breakfast is in the east part of town. How many people should i book for Sentence4: I do apologize, but that is the only international restaurant in the area. Perhaps pick another cuisine type? Sentence5: Yes, in the east part of town The Missing Sock serves international food and their prices are quite low. Shall I book you a table? Sentence6: Can you help me find a german restaurant in the east please? Sentence7: Unfortunately, that time is also unavailable. Sentence8: Can you find me something cheap? Sentence9: There is one restaurant for international on the east side the missing sock, I attempted booking but it was unsuccessful. Can we try another time for booking? Sentence10: That restaurant will be fine, lets book it. Sentence11: Okay, but given the mistake regarding the area of town, could you check again for a table for 1 at a cheap international restaurant on the east side? Sentence12: The Italian restaurant is called La Margherita. What day would you like a reservation? Sentence13: You know what, I've changed my mind. I'd prefer international to Italian. Are there any like that in the east part of town? Sentence14: I guess a reservation at 15:30 would be alright. Do you have any? Sentence15: I've found two in that area that fit that criteria. An Italian restaurant and a Vietnamese restaurant. Which of those would you prefer? Sentence16: I need a restaurant serving International Food in the East Thursday at 15:15 for one person. Can you do that for me? Sentence17: You stated earlier there was no German restaurant in the west, but I was looking for one in the east. Sentence18: That too was unsuccessful. Maybe you'd like to try for another day? Sentence19: My apologies about the miscommunication. There is no German restaurant in the east area. Sentence20: Perfect, your booking was successful, the reference number is T5BJ4XD0 . Is there anything else that I can help you with? Sentence21: I am sorry but that time is not available to book. Would you like to try another time? Sentence22: Is there a way you can contact the restaurant and try the booking again for 15:15 on Thursday for 1 person? Sentence23: Can you try again to book The Missing Sock for 1 person at 15:15? Sentence24: That sounds good. Could I get a reservation on thursday at 15:15 for 1 with a reference number? Also looking for a place to stay in the area with free parking Sentence25: I am sorry, that still does not work, any other time you could do? Sentence26: I did not find any german restaurant in the west. would you like to change location/food type? Sentence27: I prefer the Italian but will go to the Vietnamese if the booking does not work. Sentence28: Yes, as long as it is in the same general area and price range as The Missing Sock restaurant. Sentence29: Thanks! I need a hotel on the east side, please. Sentence30: Perhaps another restaurant in the east that serves International food and can be booked at that time? Question: Who has spoken the sentence 20? (A) User (B) System
Output: 


Answer: (A) User