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: I'm sorry. I'm not showing any British restaurants in the centre of town, either? Would you like to try another part of town or a different type of food? Sentence2: Ok, anything british will do. I need to book a table for 8 people on Monday at 15:30. Sentence3: They do. Would you like me to book it? Sentence4: There a no Irish places in the centre, in that price range, nor any in town. Shall I try some British food? Sentence5: Yes and can you tell me whether they have free wifi? Sentence6: Yes, please. That sounds perfect. Sentence7: Unfortunately no restaurant matches that search criteria. Could you like to look at other areas? Sentence8: cityroomz hotel in the center is moderately priced. It's located at sleeperz hotel, station road. phone number is 01223304050. shall I book it for you? Sentence9: And will you also be checking in on Monday? Sentence10: restaurant one seven is in the centre and its serves british food and it's in the moderate price range. Would you like me to book a table for you? Sentence11: I need a restaurant that serves Irish food and is in centre of Cambridge Sentence12: Any restaurant then I guess will have to do located in the centre that is moderately priced. Are you SURE their aren't' any Irish restaurants? Sentence13: The address is sleeperz hotel, station road. Sentence14: No, these restaurants aren't graded with stars. But I do have a reservation for you. The reference number is U3AG4VDD . Can I be of further help to you today? Sentence15: Please. And can I have the confirmation number as well? Can you tell me if that is 3 stars? Sentence16: Yes, may I confirm the address of this hotel please? Sentence17: Thank you for using our system. Sentence18: Yes. I would like a hotel in the same area as the restaurant. I'm not driing so I don't need free parking. Sentence19: Great. That is all the information I need. I will book the room later on my own. Thanks a bunch. Goodbye. Sentence20: Ok how many people and how many nights? Sentence21: just me for one night please Sentence22: Yes please try British. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User