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: Great. Thanks. Can you look up a restaurant for me? Sentence2: There are several trains that day, do you know what time you want to leave or arrive? Sentence3: Yeah, that sounds great. Sentence4: There is a train departing Cambridge at 15:21 and arriving in Cambridge at 17:06. Can I book that for you? Sentence5: Okay, I've booked you a seat on the 15:21 train on Tuesday. The total fee is 37.79 GBP payable at the station . Reference number is : NHFGUN35 . Sentence6: I want to go to Leicester and want to leave on Tuesday. Sentence7: What about the phone number? Sentence8: I need to get there by 17:15 Sentence9: Yes and their phone number is 01223363270. Sentence10: Thanks so much for your help. Sentence11: Hello, I'd like some information on a train departing from cambridge. Sentence12: 1. please also get me z restaurant called city stop restaurant.and give me phone number and postcode Sentence13: how many tickets would you like? Sentence14: Certainly. What is your destination and what day will you be leaving? Sentence15: Can you book it for me and get a reference number ? Sentence16: Sure, the address is Cambridge City Football Club Milton Road Chesterton cb41uy. And just to confirm, you wanted to book 1 ticket for that train? Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System