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 can be anywhere as long as it has a 4 star rating. Sentence2: I would like a moderate price range. Sentence3: I'm not concerned with the area - can you recommend a nice place that fits with what I'm looking for? Sentence4: I have 21 options for you. What area would you like to stay in? Sentence5: That narrows it down to 16. Do you care about the price? Sentence6: I have made those reservations and your reference number is ODO9D763 . Sentence7: I would like to stay in a guesthouse that has free parking while I'm in Cambridge. Thanks. Sentence8: Yes I would like you to book it for me Sentence9: book it for 7 people and 2 nights starting from sunday. Sentence10: thanks for your help. i appreciate. Sentence11: What day would you like to stay on? And how many days? How many people? Sentence12: Is there anything else I could assist you with today? Sentence13: I think you would like the acorn guesthouse. Would you like me to book a room? Sentence14: There are nine guesthouses what part of town would you like Sentence15: no that is it for now. thanks for helping Sentence16: It was my pleasure. Have a nice day. Good bye. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System