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 is located on Castle Street. Is there anything else you would like to know? Sentence2: No there isn't. Kettle's yard is completely free. Sentence3: I don't, pick the best one. Please book a room for 3 people and 3 nights starting from Monday. Sentence4: Your taxi will be a yellow Audi. The contact number is 07558448402. Can I do anything else for you today? Sentence5: Im in the west side of town, are there any pools on the westside? Sentence6: You are welcome. Thank you for getting in touch with the Cambridge TownInfo centre. Goodbye. Sentence7: Is there an entrance fee? Sentence8: Sorry, there are no swimming pools on the West side of town. Any other type of attraction you might be interested in? Sentence9: Excellent. Can I have their address? Sentence10: How about Kettle's yard. Would you like the contact info? Sentence11: Of course, the address is on castle street, the postcode is cb30aq. Is there anything else I can assist you with today? Sentence12: Yes please, I'm looking for a 3-star hotel in the south, with free parking. Sentence13: Okay. Your booking at the Lensfield Hotel was successful. The reference number is M0Z0VUJL . Can I help with anything else today? Sentence14: Okay, how about a museum, then? Sentence15: Do you have a preference in price range? Sentence16: Yes, please provide the address. Sentence17: No thank you that will be all Sentence18: I would also like to book a taxi to travel between the two places. I want to leave the hotel by 20:15 please. Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User