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: Are you looking for a certain type of attraction in cambridge? Sentence2: The TR0088 departs at 9:39 and arrives at 11:07 Sentence3: I'd like to book for 6 people. Sentence4: Alright! That's taken care of and your reference number is ZM4QYUPU . Is there anything else I can help you with? Sentence5: There are 23 musuems to choose from. Sentence6: I need a train going to Cambridge, departing from London Liverpool Street on Tuesday and would like to arrive by 12:45 Sentence7: Do you have a favorite? Pick one for me please. I need the postcode. Sentence8: Can you give me info on museums in town? Sentence9: Okay. Would you like to narrow it down by food type or price range? Sentence10: Very well, we are here if you changed your mind, have a great day. Sentence11: I am looking for information in Cambridge. Sentence12: I would also like information for a restaurant near the museum. Sentence13: I actually don't need anymore information, thank you. Sentence14: The museum of classical archaeology is in post code cb39da. Is there anything else that I can help you with?? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System