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: Yes. Please book for 2 people. Sentence2: Your passage has been booked. 16.16 GPB will be payable at the station and your reference number is ZVFTQ0X3 . Will that be all? Sentence3: Can I please book a train to bishops stortford on saturday? Sentence4: Does the Kirkwood House include free parking? Sentence5: I don't care about price. It needs to be in the north, however. Sentence6: I'd like to leave Cambridge and arrive by 17:30. Sentence7: We have many guesthouses located in the north, many of which are 4 stars. May I recommend the Kirkwood House located in the north for a moderate price with 4 stars? Sentence8: Where would you like to depart from? Sentence9: I have the TR0121 train available. It departs from Cambridge at 15:29 and arrives at Bishops Stortford at 16:07. Would you like to book a ticket? Sentence10: Yes it most certainly does. Sentence11: May I ask a price range that you would like? Sentence12: Thank you. I also need help finding a place to stay. I'd prefer a guesthouse with free wifi Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User