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: Royal Standard is a fantastic gastropub in the east. I booked the reservation for you on Saturday at 17:45. The reference number is 8JAQFYI2 . Is there anything else you need? Sentence2: There's 10 attractions in the east. Are you interested in a museum? Sentence3: I'm so glad I could help. Enjoy your stay in Cambridge! Goodbye. Sentence4: A museum is fine. Could I get the postcode and address please. Sentence5: Good Morning, I am planning a trip in Cambridge and I'm looking for places to go in town. Sentence6: I believe that's all. Sentence7: Thanks! I'm also looking for a gastropub in the same area that I'd like to book for 1 on Saturday at 17:45. Sentence8: We will be staying in the east part of town, somewhere near there would be fine. Sentence9: Sure, there is much to see in Cambridge. Do you have any preferences? Sentence10: Cambridge artworks is found at 5 greens road. Their postcode is cb13ef. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User