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, what type of cheap restaurants are there? Sentence2: I prefer the portuguese restaurant. Sentence3: Nandos is a very popular restaurant serving portuguese food in the south area of town in the cheap price range. Would you like more information or to book? Sentence4: Reference number is : 8T2T8N3Q . Sentence5: If that doesn't work, please try for Sunday. Sentence6: Rosa's Bed and Breakfast is a cheap 4 star guesthouse in the South area of town. Would you like any more information? Sentence7: Can you book for the same group of people at 12:00 the same day? Sentence8: You're welcome, have a great day! Sentence9: Let me look and see if I can find you a room for three people for three nights starting on Thursday. Sentence10: i'm looking for rosa's bed and breakfast Sentence11: No, that's great, thank you. Could you reserve rooms there for 3 people for 3 nights starting Thursday? Sentence12: Thank you! What is the reference number please? Sentence13: No I am sorry there no Scottish restaurants available in the South. Would like to try another area? Sentence14: You are all booked. Reference number is 69V5E4KX . Sentence15: Are you aware of any Scottish restaurants in the south? Sentence16: In the south there are 2 cheap restaurants. One is Chinese and the othe is Portuguese. Sentence17: Thank you. That is all for today. Sentence18: You're all booked. Your table will be reserved for 15 minutes. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User