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: That should work fine. Book it for me please. Sentence2: Is there anything in the south? Sentence3: I'm sorry I couldn't be of more help. Have a good day. Sentence4: That works. Your reference number is ICQWVQL9 . Is there anything else I can do for you today? Sentence5: What day will you start staying? Sentence6: Darrys Cookhouse and Wine Shop is a very nice, expensive restaurant in the center of town. Would you like a table there? Sentence7: There are 4 hotels that match those criteria. How about Hobson's house? Sentence8: Yes, let's try for 4 nights instead. Sentence9: I have expensive restaurants in the center. Would those suit you? Sentence10: I am sorry, but there are no modern european restaurants in the west, could I book you in a restaurant in another area? Sentence11: Alright, thank you. Goodbye. Sentence12: I'm looking for modern European cuisine. Sentence13: No the west would suit me Sentence14: Restaurant Alimentum is a moderate priced restaurant located in the south. Would this be okay? Sentence15: Can you find a modern European restaurant in the West? Sentence16: Can you find me a very nice hotel in the west? Money is not an issue. Sentence17: Yes I'm also looking for a place to dine. I would like the same price range as the Hotel Sentence18: Are there any expensive modern European restaurants? Sentence19: It doesn't look like there's any availability for your stay. Would you like to try a different day or length of stay? Sentence20: I'm sorry, we seem to be having some confusion. Please restate your criteria for the restaurant, and I'll do my best to help you. Sentence21: I will be staying for 5 days. Can you book the Hobson house for me for 5 people please? Sentence22: I'll be arriving on Sunday. Please send me the reference number for this stay. Sentence23: I'm looking for an expensive restaurant in the west of town that serves modern European dishes. Sentence24: I'm sorry, there are no expensive Modern European restaurants in the west side of town. Sentence25: How many days will you be staying? Sentence26: there's over one hundred restaurants i've found, what type of cuisine would you like? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System