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: Yeah. The reference number is CVWAKCN2 Sentence2: Is one of them in the cheap price range? Sentence3: Yes, I'd like to book a taxi to go from the attraction to the restaurant. Sentence4: I'd be happy to find you a taxi, but first I will need to know what time you'd like to leave corpus christi. Sentence5: I don't mind an entrance fee. Could you actually give me the postcode for that college? Sentence6: Is an entrance fee okay? If so, the corpus christi college located at king's parade. Fee is 2 pounds. Would you like the phone number? Sentence7: I have booked you a taxi that will get you to the restaurant by 11:30. Their phone number is 07469156027. Is there anything else I can help you with? Sentence8: Yes. Can you please search for an attraction in the type of college? Sentence9: I've got three that fit that bill... the gardenia, la mimosa, and shiraz. Do you have a preference? Sentence10: I am sorry. There does not seem to be any matching your choices. Would you like to try another area or attraction? Sentence11: I would like to leave Corpus Christi College in enough time to arrive at the restaurant at the booked time of 11:30. Sentence12: Great, could I book a table of 5 for 11:30 on wednesday? If so, please provide me with a reference number. Sentence13: I'm looking for a Mediterranean restaurant near the centre of town. Sentence14: Thank you! Is there any entertainment in the same area as the restaurant? Sentence15: Yes, The Gardenia. Sentence16: Great! I'm glad I could be of assistance to you. Thank you for using our service. Sentence17: What is the car's contact number and type? Sentence18: Your taxi is a Black Audi and their contact number is 07469156027. Is there anything else I can help you with? Sentence19: That's everything, thank you! Sentence20: Corpus christi is located at king's parade, postcode cb21rh. Would you like any further information? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System