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'm happy to be of service, and enjoy your time in Cambridge! Sentence2: consider clare hall, which is a college in the western area of town Sentence3: Can you book a hotel room for me? Sentence4: Thank you so much for your help. Sentence5: That's all for today. Thank you Sentence6: The entrance fee is 2.50 pounds. Sentence7: Yes, how many people will be attending? Sentence8: Best choice will be the Cambridge Belfry, rated at 4 stars, but very inexpensive. What night will you be checking in, so I can get a booking started for you? Sentence9: I'd like cheap. Sentence10: You are quite welcome. Can I be of any further assistance for you today? Sentence11: Please book it for 5 people and 5 nights starting from monday. Sentence12: I'd love to. What price range where you looking in? Sentence13: pick a free one for me and get me the entrance fee Sentence14: What is the entrance fee? Sentence15: There are 5 in that area. 3 have free entrance while the other 2 charge 2.50 pounds. Sentence16: Yes, i am looking for a college to visit on the west side of town.. Sentence17: Your reservations have been made. Your reference number is X1ZCL9AO . Is there anything else I can assist you with? Sentence18: Yes can you please book that for me? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User