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 dont care about the area Sentence2: What area of town would you like to stay in? Sentence3: is that a guest house? Sentence4: Sure thing, I would suggest the acorn guest house. Sentence5: No, I really want a guesthouse. What about something in the moderate price range? Sentence6: I don't have any guesthouses available that meet your criteria. Would you be willing to stay in a hotel? Or can we search using different criteria? Sentence7: no, it's listed as a hotel. do you need a guesthouse? Sentence8: in what area do you prefer? Sentence9: sure, do you need a train to get here? Sentence10: TR8331 leaves at 11:11 and arrives 11.58. can i book this one for you? Sentence11: And do you have a preference on the number of stars the establishment should have? I see both 3 and 4 star options. Sentence12: I do not have a preference on area. Sentence13: I am looking for information in Cambridge Sentence14: Are you on a budget? Sentence15: There are 14 guesthouses in the city that meet your criteria. Let's see if we can narrow it down a little. Do you need internet or parking? Sentence16: Alright, the total fee is 29.4 GBP payable at the station. The reference number is: 3LS7FBU8 . Anything else I can get you? Sentence17: i don't care, i already told you that. Sentence18: Yes, I am also looking for a place to stay. The hotel should include free wifi. Sentence19: No. I would prefer something expensive and with free wifi. Sentence20: Yes please, I need 3 tickets and the reference number. Sentence21: We have lots of hotels! Any part of town you'd prefer? Sentence22: Okay, how about the University Arms Hotel? Sentence23: Thank you for calling our service today. Please let us know if we can assist you with your future needs. Goodbye! Sentence24: The hotel should include free wifi. Sentence25: I would prefer a four star can you send me some info on that? Sentence26: No. Thanks you. That's all. Goodbye Sentence27: Give me their area and address Sentence28: The Acorn Guest House is located in the north part of the city and their address is 154 chesterton road. Anything else for you today? Sentence29: Yes, on tuesday from kings lynn, leaving after 10:30 please? Sentence30: Yes please. Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User