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: thanks for inquiring with us. Sentence2: la tasca is located in the centre. Do you need for me to book it ? Sentence3: You're very welcome. Is there anything else I can help you with? Sentence4: Can I help you with anything else? Sentence5: No, thats ok. Thank you. Sentence6: i am looking for a spanish restaurant in the moderate price range Sentence7: What time do you need it to arrive? Sentence8: There is the museum of archaelogy and anthropology or the whipple museum of the history of science - do you have a preference? Sentence9: Ok thank you. I will also need a taxi to get between the restaurant and museum. Sentence10: Science is interesting. Could you give me the phone number and entrance fee? Sentence11: Ah, thanks. Also, I'm looking for a museum to go to in the same area. Can you recommend one? Sentence12: Thank you so much. Sentence13: there are eleven in that area. is there a particular type of museum you like? art, history, science? Sentence14: Their address is 14 -16 Bridge Street, their postcode is cb21uf, and their phone number is 01223464630. Sentence15: No, that's all thank you very much. Goodbye Sentence16: Your taxi is booked. Look for a red lexus. Your contact number is 0777538009 Sentence17: I just need to get it's address postcode and number please. Sentence18: I just need to leave the museum by 19:15. Sentence19: You can choose but I need their phone number, postcode and entrance fee. Sentence20: The Museum of Archaeology and Anthropology has a free entrance fee. The phone number is 01223333516. The postcode is CB23DZ. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System