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: Please just tel me which one you think best, then provide the area it is in and the phone number. Sentence2: queens' college is pretty great. It's in the west. Their number is 01223335511. Sentence3: The arrival time for that train is 18:10, is there anything else I can help you with? Sentence4: What day would you like to travel, and what time would you leave or arrive by? Sentence5: Have a great day! Sentence6: What is the arrival time? Sentence7: Sure, there's lots to do here? Is there a certain area or type you're looking for? Sentence8: Yes, book me for 1 please. Sentence9: Hi, I'm planning a trip to Cambridge. Can you suggest some places I could visit in town? Sentence10: I would like that the train should leave on saturday and after 16:15. Sentence11: No. Thank you Sentence12: What is the train ID? Sentence13: What's your favorite college to visit? I'm not picky about the area. Sentence14: Alright, TR4216 leaves at 17:21. Would you like me to book you passage? Sentence15: There are 18 of them in the city. Do you mind an entrance fee or would you prefer one that's free? Sentence16: The train ID is TR4216. Can I help you with anything else today? Sentence17: That's fine. I also need a train from Cambridge to stevenage. Sentence18: You're all set. Your reference number is R55DTSWS and there will be a 10.24 GBP fee due at the station. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User