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: There are 7 restaurants in the center of town that serve British cuisine. Would you prefer one with an expensive, moderate, or cheap price range? Sentence2: There is no cheap British food in the centre. Would you prefer a moderately priced one? Sentence3: Are there any moderately priced restaurants near the botanic gardens? Sentence4: Sounds great. i don't need a reservation but can I get a taxi from Restaurant One Seven to the gardens? Sentence5: Of course. The address listed is bateman street. Sentence6: There are 4 moderately priced British restaurants in the same area as the botanic gardens. Sentence7: Are there any British restaurants in the center of town? Sentence8: Is there such thing as cheap British cuisine? Where is that? Sentence9: Yes please, can I have the address? Sentence10: Can I get a contact number for that taxi? Sentence11: Perhaps. I'm also looking for a place to go .. maybe a park in the centre? Sentence12: We have cambridge university botanic gardens. Could you like more information on them? Sentence13: Sure, I'll need to know a time frame for arrival or departure though. Sentence14: I would like to leave the restaurant by 14:45. Sentence15: I'm sorry - I'd really like the name of a British restaurant in city center, I don't mind what price but please do tell me what the price is. Sentence16: Alright, I have your taxi booked to pick you up at Restaurant One Seven at 14:45 to go to the Cambridge University Botanical Gardens. Sentence17: OK, how about Restaurant One Seven? It serves British cuisine in city centre. It's moderately priced. Sentence18: Sure thing, it will be a black audi and contact number 07098094342. Is there anything else I can help you with? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User