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: What area is it in for reference? Sentence2: Can you tell me how many stars that guesthouse is and the area of town? Sentence3: The Acorn Guesthouse is a 4 star guesthouse located in the North. Do you need more information or would you like to book a room? Sentence4: Happy to help. Let us know if you need anything else. Thank you. Sentence5: yes. can you please give me the address? Sentence6: Christ's College is located in the city centre. Do you need any further information? Sentence7: I have 18 different colleges. Do you have a certain area you would like? Sentence8: I would like to stay in a hotel that is moderately priced and includes free parking. Can you help? Sentence9: I don't need to book at the moment, but I was interested in places to go in town. What colleges are there to visit? Sentence10: Nope, that's perfect. You've been very helpful. Sentence11: Acorn guest house is available would you like to try that? Sentence12: Certainly. Their address is 154 Chesterton Road, postcode cb41da. Can I help with anything else? Sentence13: christ's college at saint andrew's street and it's free. Sentence14: Surprise me. I do need an address and the entrance fee. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System