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: I'd love it if we could stay in the centre of town. Also, I would like it to be three stars. Sentence2: I've reserved a table for 6 at ugly duckling at 14:45 on Saturday. Your confirmation number is G6RS8PAR . Sentence3: Ah... just pick one that you recommend and do a reservation for 6 at 14:45 on Saturday. Sentence4: Sure, can I narrow down your preference a bit? Is there a part of town you prefer? Sentence5: No thanks, just gathering info, thank you so much for your help, have a good evening. Sentence6: I was happy to help. You have a good evening, as well. Good-bye. Sentence7: Is this a hotel or a guesthouse? Sentence8: It is a hotel. Would you like to book it? Sentence9: Can you tell me what the price range is at the Gonville Hotel? Sentence10: There are 10 results for that search. Can I narrow that down with a price range you'd like to stay in? Sentence11: Yes certainly it is in the expensive price range. Sentence12: I'd like an expensive restaurant, please. Sentence13: Great. Gonville hotel should meet your needs. Would you like me to book it for you? Sentence14: am also looking for a place to stay. The hotel should include free parking and should include free wifi Sentence15: Can you assist me to find Restaurants in the Center of Cambridge that serves Chines foods? Sentence16: There are four. Would you like a table, or more information? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System