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, that will work. Sentence2: Rosa's bed and breakfast is a guesthouse in the south area that meets your preferences. Would you like me to make a reservation for you? Sentence3: When would you like to visit? Sentence4: I'm not finding any. Would you care for another part of town? Sentence5: Thank you for using our services & have a good day. Sentence6: I really need internet. Can you tell me if they have free wifi? Sentence7: Yes they do! Do you have any other questions about Rosa's? Sentence8: Sure. Is there anything else I can help you with today? Sentence9: Ok, are there any hotels in the cheap price range in the south part of town? Sentence10: Yes, the Lensfield Hotel is an expensive hotel in the south with 3 stars, free wifi, and free parking. It's located at 53-57 lensfield road cb21en. Would you like to book? Sentence11: No, that's fine! Sentence12: Can we check for guesthouses? Sentence13: Yes, Rosa's absolutely has free WiFi. Can I book a room for you? Sentence14: I don't need a reservation right now, but does Rosa's B&B have internet? Sentence15: No, that is all I need. Thank you. Sentence16: Are there any proper hotels in the south? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User