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: Yes I do. I want to leave the hotel by 24:45 to go to the park. Sentence2: The phone number for Wandlebury Country Park is 01223243830. Do you any further assistance today? Sentence3: Unfortunately all we have is the aylesbray lodge guest house Sentence4: Hello, I am looking for a hotel in the south that is moderately priced. Sentence5: Do you mean that you want to book a taxi? If so, what will your destination be? Sentence6: Wonderful. Can you provide me with the contact number? Also, what kind of car is it? Sentence7: Of course, sorry about that. Look for a red Lexus. The contact number is 07951076280. Can I be of further assistance today? Sentence8: There's one with 3 stars - Bridge Guest House. It's in the south and is moderately priced, and they have free wifi and parking. Would you like to book a room? Sentence9: Yes, I'm also looking for info on Wandlebury Country Park. Sentence10: I can't find any hotels, but I did find a guesthouse called aylesbray lodge guest house with that criteria. Sentence11: Okay, do you have any hotels with a 3 star rating instead? Sentence12: thanks. i want to leave the hotel by 24:45. Sentence13: I'd prefer a hotel. It should have a 4 star rating. Can you check again, please? Sentence14: Nope, that's it. Thanks! Sentence15: Very please to have been of assistance today. Sentence16: I was able to book your party of 6 into Bridge Guest House for 2 nights starting Thursday! Reference: GAAQJAQQ . Can I help more today? Sentence17: Can you give me their phone number please? Sentence18: I guess that's fine, book it for 6 people for 2 nights, We'll be there on thursday. Sentence19: Wandlebury Country Park is located at wandlebury ring, gog magog hills, babraham. Is there any other information you need today? Sentence20: Your taxi will be available and has been booked. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User