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: Bye, take care Sentence2: There are 4 places to stay in the Centre area two are guesthouses and two are hotels. Do you have a type preference or price range? Sentence3: They both have free wifi and parking. Would you like me to book one for you? Sentence4: No problem, are there any college places? Sentence5: christ's college is in the centre, as are many other college's in fact. Sentence6: I am looking for a moderately priced hotel, that has a 4 star rating. Sentence7: Emmanuel college is free to visit and the postal code is cb23ap. Sentence8: You're welcome, let me know if I can help again. Sentence9: Please pick one, and tell me the entrance fee and post code. Sentence10: Hello, I'm looking for an attraction that is in the type of multiple sports and is located in the centre. Sentence11: I'm afraid we don't have any like that in the center. There's a cheap 4-star guesthouse and an expensive 4-star hotel. Would either of those work for you? Sentence12: You are quite welcome. Will you need a taxi to the hotel? Sentence13: I'm sorry. There is no multiple sports attraction in the center of town. Sentence14: Book it! Need 3 people for 5 nights starting Friday. Thank you. Sentence15: Awesome! Thanks for your help! Sentence16: Goodbye! Have a great stay in Cambridge! Sentence17: I also need a moderate place to stay, with free parking. Sentence18: Booking completed! Look for a black toyota at 22:45. Contact number : 07067597569 Sentence19: Thanks for your help. That's all I need. Sentence20: I booked 3 nights for 5 people at university arms hotel beginning friday . They are located at regent street and the phone number is 01223351241. Sentence21: Does it have free wifi at least? Sentence22: Yes please. I want to leave the attraction no later than 22:45. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System