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: We can book hotels, restaurants, trains, and taxis for you and provide information about places, but we do not actually call attractions them for you ourselves. Sentence2: You're welcome. Have a great day. Sentence3: SI booked you at the university arms hotel. Your reservation is POY0JCRA on Thursday. Sentence4: Yes, there are several did you have a specific area in mind? Sentence5: Can you call them for me please? You are supposed to be customer service? Sentence6: What area of town would you like to stay? What price range? Sentence7: I would recommend the university arms hotel. It is expensive and in the centre. Would you like me to book that for you? Sentence8: No. I would just like you to recommend one and give me the area, number and how much it cost to get in. Sentence9: Thanks! That is all I need. Sentence10: I am looking for a 4 star hotel in the Centre. Internet is not necessary but I will accept one that has it. Sentence11: i'm looking for a place to stay Sentence12: That sounds good can you book that for 8 people for 3 nights starting thursday? Sentence13: I can't help you with the cost, you would have to call about that. I recommend Parkside Pools in the centre. You can call them at 01223446100. Sentence14: Are there any swimming pools that I can go to in Cambridge? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System