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: What is the postcode of the restaurant? Sentence2: And what type of car will be picking me up? Sentence3: Yes I also need a taxi to take me from the hotel to restaurant. I want to leave the hotel by 6:15. Sentence4: They do have free parking. They also have free wifi. Would you like me to make a booking? Sentence5: The postcode for the Rice House is cb12bd. Can I help you with anything else today? Sentence6: I don't need a reservation, I just need the postcode. Sentence7: There are 10 available. Do you want to specify hotel type or area? Sentence8: I'm looking for a cheap hotel that has free wifi. Sentence9: I have set up Yellow Skoda taxi to pick you up at 6:15. Their contact number is 07482129349 Sentence10: There are 8 of those. Is there are particular area of town you were looking for? Sentence11: Do they have free parking? Sentence12: That hotel is located on Back Lane in Cambourne. Anything else? Sentence13: There is not. Sentence14: A yellow Skoda is the type of car the taxi will be. Can I help you with anything else today? Sentence15: I would like to think on it if possible. But perhaps. Could you also help me find a chinese diner located in the centre? It needs to be cheap also. Sentence16: What day, time, and how many people will be coming? Sentence17: Yes, may I have the address for that hotel? Sentence18: How about The Cambridge Belfry? Sentence19: I would like one with a 4 star rating. Is that an option? Sentence20: Rice House is at 88 Mill Road City Centre. Sentence21: No, thank you. You have been very helpful! Sentence22: Thank you for using our service. Have a nice day. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System