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: Okay. Would you like to book a room at the Acorn Guest House? Sentence2: I have nothing matching what you are looking for. Perhaps another area or another attraction? Sentence3: they are at cambridge passenger cruisers, jubilee house,cb43ax. or call them on 01223902091. Sentence4: I am sorry I do not have that information, I can give you their phone number if you would like. Sentence5: I also need a hotel. One with free wifi and not too expensive. Sentence6: If you want to stay in the north, the Acorn Guest House is moderately-priced and quite nice. If you want cheap, I recommend Worth House. Sentence7: Okay let's try the Acorn Guesthouse. Sentence8: I would like their phone number, entrance fee, and address. Sentence9: Yes the phone number would be great. What are their hours? Sentence10: riverboat georgina has nice boats. Are you interested ? Sentence11: I would be happy to book the Acorn Guest House for you. Can you please tell me the day, length of stay, and the number of people. Sentence12: The Acorn Guest house is a beautiful 4-star guest house. They do offer internet and parking. Would you like me to provide their contact information for future reference? Sentence13: Can you book it for me and get a reference number ? Sentence14: I want to stay in the north. Are there any attractions with boats? Sentence15: no that is it for now thanks Sentence16: You're welcome. Have a good visit. Sentence17: The phone number is 01223902091. Their website is vague, I'm afraid you'll have to call them for their hours. What else can I help you with today? Sentence18: I actually won't need a booking. Can you tell me the star of the hotel and if they offer free parking? Sentence19: No, thank you. Could I get the entrance fee of the Riverboat Georgina? Sentence20: looking for places to go in town. The attraction should be in the north and should be in the type of mutliple sports Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System