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: Great, will you need a taxi perhaps? I can also give you information on attractions in the area. Sentence2: you are welcome. enjoy your stay. Sentence3: Perfect! That is all I needed. Sentence4: No, that was all I need, thanks. Goodbye. Sentence5: Done. Look for a white volkswagon and the contact number is 07673977358. Will there be anything else today? Sentence6: All righty, your reservation is set for Sunday, 18:15, for 8 people. Your table will be held for 15 minutes. Your reference number is NUVBZXWY . Sentence7: Yes, please. I will have a party of 8 ready to dine on Sunday at 18:15. Sentence8: Oh yes of course. I need one to arrive at the restaurant by 18:15. Please provide the car type and contact number. Sentence9: I recommend Royal Standard, a gastropub in the east. It's located at 290 Mill Road City Centre. Can I make a reservation for you? Sentence10: I'd prefer an address at this point. Thanks! Sentence11: Home From Home is a 4 star guesthouse with internet and parking in the moderate price range. Would you like their phone number? Sentence12: Okay. Their address is 78-80 Milton Road. Sentence13: Thanks! I'm also looking for an expensive restaurant in the east. Sentence14: I need to know more about a hotel called home from home. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System