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 have many choices: theater, colleges, museums, architecture. Do any of these venues interest you? Sentence2: Christ's College offers free admission. Sentence3: What day would you be arriving on and for how many people? Sentence4: There are 7 hotels that meet that criteria. Do you have an area preference? Sentence5: Fantastic. I have all of the information I needed, thank you. Have a great day. Sentence6: Any of them will do. I'll book a room in whichever one you think is best. Sentence7: Do any of these 7 have free wifi? Sentence8: That would be fine. Can you confirm the entrance fee? Sentence9: That would be great. Two nights please. Sentence10: Yes certainly. We have several. Christ College is a good choice. Sentence11: I have 18 results that match your request. To help narrow it down, what part of town would you like to stay in? Do you have a price range preference? Sentence12: The hotel also needs to be cheap and have free wifi. Sentence13: The alexander bed and breakfast is in the center of town, would you like help with the booking? Sentence14: Let's try 5 nights, starting Friday, with 2 people. Sentence15: Yes, I am looking for something to do during my stay. I'd like it to be around the centre area. Sentence16: I have confirmed your reservation at alexander bed and breakfast starting Friday for 5 nights. Your reference number is K67RS8EB . Is there anything else I can help with? Sentence17: Glad to have been able to assist you. Thank you and have a great day. Sentence18: I am looking for a 4 star guesthouse in Cambridge. Sentence19: They all have free wifi. Sentence20: Are there any colleges in the centre of town that have free admission? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User