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 suppose one night wold be fine as long as we can get a reservation for 3 people. Sentence2: I have a few rooms, could you tell me the area of town you would prefer? Sentence3: Thank you. We'll be happy to help you with your future travel needs. Sentence4: There are 11 different hotels to choose from. What part of town would you like to stay in? Sentence5: Sounds good. Starting Monday, please, for 3 people, 3 nights. Sentence6: That is all. Thank you. Sentence7: I want to find a 4 star hotel with a moderate price. Sentence8: Carolina bed and breakfast is a moderately priced four star guesthouse with wifi and parking, in the east area. Would you care to make a reservation? Sentence9: I was able to get you a room for 3 people for 1 night, starting Monday, at the Acorn Guest House. The reference number is GXTSRBY0 . Sentence10: I'm sorry, there are no rooms available at that time. Would you like a different day or shorter stay? Sentence11: Do you mean in the center of town? Sentence12: I prefer a hotel near the main street. I want a hotel that includes free wifi Sentence13: It doesn't matter. Sentence14: Actually, location doesn't really matter, so long as it's moderately priced, 4 star, and offers wifi. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User