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'll be heading to Broxbourne. Sentence2: 7 people please. Sentence3: I have 2 Thai restaurants in Cambridge, both are very expensive. I have one in West and the other in the Centre, do either of them sound good? Sentence4: I also need to leave via train from cambridge after 9:15 on sunday, can you help me with that? Sentence5: thank you and enjoy your stay in Cambridge! Sentence6: I would like it booked and need the reference number. Sentence7: Yes, there are 7 of us who will be going. Sentence8: Your reservation is booked. The reference number is L84LJ43R . Sentence9: Please book a table for 15:45 on Thursday. I would like the thai restaurant in west cambridge. Sentence10: Great!! Thank you for all your help. Sentence11: I am looking for a very nice Thai restaurant in Cambridge. Sentence12: Sure! Where will you be going? Sentence13: Alright, I see 14 trains here. Would you care for a booking? Sentence14: Would train ID TR9580 leaving at 10:01 and arriving at 11:01 work for you? Would you like tickets for the same party of 7? Sentence15: How many people would you like a table booked for at Sala Thong? Sentence16: I have you booked for 7 on that train, the reference number is PP68MYLF . Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User