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: Your booking was successful. Your reference number is CQB3NI5K . Is there anything else? Sentence2: Yes, what do you recommend for entertainment? Sentence3: The cost of the ticket is 8.08 GBP and it's payable at the station. Anything else I can help you with? Sentence4: OK, what type of information are you looking for? Sentence5: I am planning a trip in Cambridge Sentence6: I suggest the funky fun house on the east side of town! Sentence7: Of course. Can you tell me the address and entrance fee please? Sentence8: Yes, I would like a ticket for one please. Sentence9: 8 mercers row, mercers row industrial estate is the address but there is no entrance fee in our data base Sentence10: it's listed as "entertainment" Sentence11: Train number TR6163 leaves Bishops Stortford at 05:29 and arrives in Cambridge by 06:07. Would you like a ticket for this one? Sentence12: How much is the ticket going to cost me? Do I pay you? Sentence13: Yes, is there a specific type of attraction you would like to see? Sentence14: I need to find a train to arrive on Saturday by 11:45 going to Cambridge from Bishops Stortford. Sentence15: Thank. That is all I need. Sentence16: Yes, can you help me find places to go in town? Sentence17: Ok great! What type of entertainment is that? Sentence18: Happy to have been of assistance. Please let us know if there is anything else we can do for you. Goodbye. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System