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: Sure, we have Milton Country Park located in the north in Milton. There phone number is 01223420060 & postcode is cb46az. Sentence2: Your arrival time for TR6833 is 21:07, with a travel time of 88 minutes. Price is 16.60 pounds per ticket. Sentence3: No problem, glad to be of help! Sentence4: What are some places I could visit that are in Cambridge? Sentence5: Ok, great thanks. I also need to find a train going to cambridge. Sentence6: I would like the travel time, arrival time and price, please. Sentence7: There are several great places to visit in cambridge. What type of attraction do you prefer? Sentence8: Sure thing! How many tickets will you be needing? Sentence9: I have 1,414 possible options for you to take. Is there any way for you to narrow down which one you need? Sentence10: I need a train to leave on Tuesday after 18:00 from London Liverpool street going to cambridge. Sentence11: TR6833 leaves at 19:39 and arrives in Cambridge at 21:07 for 88 minutes of travel. It costs 16.60. Sentence12: TR6833 is a train that matches your requirements, would you like that? Sentence13: That was all the info I needed today, thank you. Sentence14: Thank you. I would like to book that train. Sentence15: Thank you, that's all I need for now. Sentence16: I would like to visit a park on the north side. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System