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: Actually, I would like to book the Acorn Guest House for wednesday. Sentence2: Certainly! How many people are staying and how many nights will you require? Sentence3: The Castle Galleries are in the centre. Sentence4: What museums do you have in the centre? Sentence5: That sounds good. Can you tell me what the entrance fee is? Sentence6: Okay. Is there anything else I can do for you today? Sentence7: Great! Have a wonderful day! Sentence8: The booking has been completed. Your reference number is : 01P47PJ5 . Is there anything else I could do for you? Sentence9: Not at this time. Let me think about it. Thanks! Sentence10: Thanks. Can I also have the address and postcode? Sentence11: The entrance fee is free. Sentence12: Unfortunately, they were not available for that stay. Would you like to try a shorter stay? Sentence13: I found 5 guesthouses in the north. The Acorn Guest House has free internet and parking. Can I book this guesthouse? Sentence14: I need a 4 star place to stay in the north. Sentence15: Can we please try for 2 nights? Sentence16: No, you've been a great help. Thank you for your time. Goodbye. Sentence17: It will be 3 nights for 8 people. Sentence18: Certainly. The address is unit su43, grande arcade, saint andrews street and the postcode is cb23bj. Is there anything else I can help you with? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System