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: Great! Have a great day! Sentence2: Ok, I have 7 listings. Might I suggest the Museum of Classical Archaeology? Sentence3: Yes I am looking for a guesthouse in the north. Can you book it for 2 nights starting Saturday for 1 person? Sentence4: May I suggest the Acorn Guest House? Sentence5: They are located on sidgewick avenue and admission is free. Can I assist with anything else? Sentence6: That sounds like a great place. Sentence7: There are many museums. Do you prefer a certain part of town? Sentence8: I am also looking for a place to stay. Perhaps 4 stars, and I need wifi. Sentence9: I am looking for places to go when I get to town. Are there any good museums? Sentence10: There are a few places that match that description. Do you know what area you'd like to stay in? Sentence11: No. Thank you though, this has been very helpful. Sentence12: Yes I would prefer to be in the west. Sentence13: sure thing all set! reference number is IS8BB29K anything else for you today? Sentence14: That sounds great. Can i get the address and entrance fee? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System