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: Yes, Scudamores Punting Co is located in Granta Place, Mill Lane and their phone number is 01223359750. Anything else you want to know? Sentence2: in order for me to get a cab for you I need the arrival and or departure times Sentence3: Okay! For when, and for how many people? Sentence4: Yes. I would like a taxi to take me from the attraction to the restaurant. Sentence5: Yeah, are there any expensive Chinese places in town? Sentence6: You're welcome. Have a great day. Sentence7: Perfect thats everything I needed thanks for the help Sentence8: I've booked a taxi for you. It's a blue Volvo and the contact number is 07079040787. Sentence9: I don't need a reservation at the moment but could you send me the postcode and address of the restaurant. Thank you. Sentence10: How about peking restaurant? Would you like to make a reservation? Sentence11: I need to get to the attraction by 22:15. Sentence12: that sounds great, please do Sentence13: I would like the south please. Sentence14: Is there an entrance fee? If so, what is it? Sentence15: Hi, I am looking for a particular attraction. Have you heard of Scudamores Punting Co? Sentence16: There are 9 expensive Chinese restaurants in town. Is there a particular area you would like to dine in? Sentence17: The address of the restaurant is 10 Homerton Street City Centre. The postcode is cb28nx. Can I assist with anything else? Sentence18: If they have an entrance fee, it's not showing up with their listing. Is there anything else I can do for you today? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System