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: We have just the place. Darrys Cookhouse and Wine Shop serves this type of food in the centre and is within the expensive range. Sentence2: I would be happy to look that up. Where would you like to depart from? Sentence3: I found 10 trains, do you have a particular time you'd like to go? Sentence4: Not now, but I do need a train to cambridge that leaves after 19:45. Sentence5: I have the TR4015 that leaves at 19:54. Will that work? Sentence6: Of course, the address is 40270 King Street City Centre. Would you like me to try and book you a reservation? Sentence7: Yes, that will work. Can you please book 4 tickets for that train. And can I get the reference number please. Sentence8: Booking was successful for TR4015, the total fee is 51.2 GBP payable at the station. Your reference number is : JZCOHGH8 . Can I help with anything else? Sentence9: I am looking for a place to eat. I want to eat modern european food in the expensive price range please. Sentence10: That sounds great! Could you give me the address? Sentence11: No thank you. That was all the information that i needed, i appreciate everything you have done for me. Sentence12: Thank you for using our system! Sentence13: I want to depart from stevenage on wednesday please. Sentence14: The only time specification is that the train leaves Stevenage after 19:45. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User