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: The Carolina Bed and Breakfast is a moderately priced 4 star guesthouse with free parking. Would you like to try that one? Sentence2: The phone number for The Carolina Bed and Breakfast is 01223247015. Can I help with anything else? Sentence3: Yes, can you book me at the guesthouse for 8 people? Sentence4: Sure thing, what day would you like to check in and how many days do you want to stay? Sentence5: I can provide you four names but not an entrance fee. I am sorry. Sentence6: I am not. Can you please give the phone number and entrance fee for one of them? Sentence7: I want to stay on the east side of town and I'm looking for a guesthouse type hotel. Sentence8: Ok, I also need a place to stay and I don't care about free parking, but can it be moderately priced? Sentence9: I have many options available. Is there a particular area of town you would like to stay or a number of stars you want? Sentence10: Just give me the phone number for the first one on your list, and can you confirm if that one has an entrance fee please. Sentence11: Of course, there are 4 public pools in Cambridge. Are you looking to visit any particular part of town? Sentence12: What is this hotel's phone number? Sentence13: I would like to find a pool that I can visit. Sentence14: The phone number for the abbey pool and astroturf pitch phone number is 01223902088. I am sorry, but they do not note if an entrance fee is required. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User