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 can definitely help you with that! I assume you would like to make it in time for that reservation, right? Sentence2: That is perfect, can I get the postcode please? Sentence3: can you tell me where restaurant alimentum is Sentence4: You're welcome. Enjoy! Sentence5: Yes please, I need a table for 3 people at 16:45 on Wednesday. Sentence6: Your reservation is all set, ref# E60EWJ8S . Is there anything else we can help you with today? Sentence7: Yes, it serves modern european cuisine and is located in the south area, would you like me to book you? Sentence8: I have 13 colleges to choose from. May I suggest christ's college? Sentence9: Christ's college's postcode is cb23bu. Would you also like their phone number or address? Sentence10: I will also need a taxi, from the college to the restaurant. Sentence11: All set! Your car is a blue ford and the contact number is 07068268863. Sentence12: Thank you so much. Goodbye! Sentence13: What types of colleges are there around the centre Sentence14: Yes, I would. Can you give me the contact number and car type when you book that, please? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User