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: Reference number is LFBB6YNO . Sentence2: Will the taxi be picking you up at the hotel or at the museum? Sentence3: I also need a taxi to commute between the two places. Sentence4: Your taxi is booked. Look for a blue ford, their contact number is 07211297115. Is there anything else I can help you with? Sentence5: I can recommend the City Centre North B and B. It is in the cheap price range. Would you like me to book that for you? Sentence6: What is your price range? Sentence7: I do not. Can you recommend one? Sentence8: The Broughton house gallery is in the centre. It's postcode is cb11ln. The phone number is 01223314960. Is there anything else I can help you with? Sentence9: Any range is fine but it needs to include free wifi and parking. Sentence10: If you need anything fell free to call us. Sentence11: I need picked up at the hotel by 9:15 please. Sentence12: Thank you and Goodbye, Sentence13: No, that is wonderful. Have a nice day and thank you. Bye. Sentence14: Hi, I'll be traveling to cambridge and am excited to find some places to go. Can you help me? Sentence15: im looking for a museum in the centre. may i also have the postcode and phone number for them as well? Sentence16: I also need to book a guesthouse in the north. Sentence17: You're welcome! Thanks for contacting Cambridge TownInfo centre! Sentence18: I will be more than happy to assist you. Please tell me what kind of attractions you are interested in? There are many categories of attractions in the Cambridge area. Sentence19: Sure. I'll need rooms for 4 people reserved for 4 nights, beginning Saturday. Can I have the reference number for that booking? Sentence20: Okay, I have 9 guesthouses that fit your needs. Are you looking for a particular star rating? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System