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 would like a 1 star hotel. Sentence2: I recommend the acorn guesthouse it's located at 154 chesterton road and their number is 01223353888. Is there anything else I can help you with today? Sentence3: The area doesn't matter. If you could give me the name, phone number and address of a 4 store hotel; that would be fine. Sentence4: Clare Hall address is herschel road in west area, postal code cb39al. I hope this helps today. Sentence5: The phone I have listed is 01223332360. Can I hlep with anything else today? Sentence6: we have quite a few, clare hall is one of my favorite's Sentence7: There are several 4 star hotels. Do you have a particular area in mind? Sentence8: Yes, can you recommend a college I could visit while I am there? Sentence9: I sure can. Are there any other requirements you'd like to include in your search? Sentence10: I am sorry but could not find a 1 star hotel with your needs. If there is anything else I can help you with let me know, thaks. Sentence11: I need to find a hotel with free wifi to stay at. Can you help me? Sentence12: Um, how about the address too please? Sentence13: ok, try a 4 star hotel. Sentence14: That sounds good. Can I get their phone number and address please? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User