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: I would like something in the north and has free wifi and free parking if possible. Sentence2: Can you book the Acorn Guesthouse for Thursday? Sentence3: Actually that is all. Have a lovely day. Sentence4: Thanks. Bye now. Sentence5: You've been booked and your reference number is V69YHH10 . Sentence6: I have the Acorn Guesthouse, Arbury Lodge Guesthouse, and Archway House in that area all with free wifi and parking. Can I book one of these for you? Sentence7: How many stars would you like? Sentence8: Excellent! Thank you! Sentence9: Four stars please. Sentence10: Is there anything else I can help you with? Sentence11: Great, I need it for 5 people for 3 nights, and let me know the reference number. Sentence12: I'll be happy to. How many people in your party? And how many nights will you be staying? Sentence13: Thank you. Have a great day. Sentence14: Hi, I am looking for a r star place to stay that has free wifi. Sentence15: I have 21 that have 4 stars, 18 are guest houses and 3 are hotels. Do you have a preference to area or type of place? Sentence16: Here is the address and telephone number of the hotel, so can arrive without any problem. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System