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: It doesn't look like we have any expensive 4 star guesthouses. There are some which are moderate if you are interested. Sentence2: I would like to check in on saturday. We would need 4 nights for 8 people. Sentence3: Hi. I am looking for a hotel that is a guesthouse that has free parking. Can you help me find one? Sentence4: Yes, can I get the phone number and address for the Cambridge and County Folk Museum? Sentence5: I have booked you at the archway house. The reference number is 61O3SUCK . Can I help you with anything else? Sentence6: I have booked you. Thank you. Goodbye. Sentence7: The Archway House is very nice. Would you like me to book a reservation? Sentence8: The phone number for the cambridge and county folk museum is 01223355159, and the address is 2-3 castle street. Anything else? Sentence9: Yes and can i get the reference number? Sentence10: Moderate will do. Can you give me more information please? Sentence11: Sure, how about an expensive, four star guest house? Sentence12: There are 21 options available. Do you have any other preferences to narrow down the search? Sentence13: No, that will be all. Sentence14: What day would you like to check in at the guesthouse? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System