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, I'm looking for a chinese restaurant in the same part of town as the hotel. What's around? Sentence2: That's great. Thank you so much for all of your help today. Sentence3: Sorry, nothing falls under those categories. Shall I check one WITH free parking? Sentence4: I think that will be all Sentence5: It is a hotel, and it has the postcode of cb21ad. Is there anything else I can help you with today? Sentence6: Yes, give that a try please. I also need free wifi. Sentence7: May I recommend the express by holiday inn cambridge? I'd like to know how many people are staying as well. Sentence8: I have 5 different lovely hotels. How many are we booking for please? Sentence9: Let's go with jinling noodle bar. The address is 11 Peas Hill City Centre, the phone number is 01223566188 and the postcode is cb23pp. Sentence10: Okay. Glad I could be of assistance. Sentence11: There are two expensive hotels centrally located with free WIFI and parking. The University Arms Hotel has a 4 star rating, would you like more information about it? Sentence12: I am looking a hotel to stay in. Could you find me one on the more expensive side? But it doesn't need free parking. Sentence13: I'm not sure yet, but I'll probably only need one room. I forgot to mention, the hotel needs to be located in the centre of town. Sentence14: No, it does not. Please give me the address, phone number, and postcode of any 1 restaurant that matches my criteria. Sentence15: We have many Chinese restaurants in the center of town, ranging from cheap to expensive. Does price range matter? Sentence16: That sounds good. I need to check the number of people before I book. Sentence17: Have a wonderful trip. Sentence18: Yes. I am interested to know the postcode, and if it is a hotel or guesthouse. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System