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: Yes, please. I need the reference number for that as I said. Sentence2: You're very welcome. If you need anything else, please let us know. Sentence3: 1 guest arriving at Kirkwood House on Saturday and staying 2 nights. Your Reference number is : 414YSUQO . Would you still like me to find a restaurant for you? Sentence4: Yes, the address of The Hotpot is 66 Chesterton Road Chesterton, cb41ep. Can I be of further assistance? Sentence5: Type doesn't matter but I'd like it to be 4 star please. Sentence6: I'm sorry, I don't need a booking just yet. I would like to find a restaurant serving Chinese food, in the north. Sentence7: So for 3 people in total? Sentence8: Can you give me the address and post code, please? Sentence9: yes I need the reference number. I also want to find a restaurant. Sentence10: Okay, how many people and for how many days do you need that hotel. Sentence11: I have the kirkwood guesthouse. Would you like me to book that for you? Sentence12: I found several will you be needing a reference number for this booking? Sentence13: Yes, The Hotpot is expensive and in the north. Would you like me to book a table? Sentence14: There are eight in that area. Would you like to book one? Sentence15: oh yes, and please book for two more persons Sentence16: I'd also like it to have free wifi. But, it doesn't matter to me if there is free parking. Sentence17: Just myself, 2 nights starting saturday. Sentence18: Hi, I need a place to stay on the northend. Sentence19: Sure, how about the hotpot? Sentence20: No, I think that should be all I need for now. Thank you so much for your patience with me! Sentence21: Please be specific about the price range and hotel type you are interested in. Sentence22: Is the hotpot expensive? I want the restaurant to be expensive, in addition to being chinese food and in the north. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System