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 really like British cuisine that is in the center of town. Sentence2: Sure, what are you looking for? Sentence3: I'll need to know when you want to leave or arrive. Sentence4: They're in the north end of town. Would you like to book a reservation? Sentence5: They do have free wifi and their phone number is 01223353888. Is there anything else you need to know? Sentence6: Ok, I think that's it. Thanks for your help. Sentence7: I've made your booking. Your reference number is L6STCUZA . Is there anything else I can help with? Sentence8: Yes. Are you able to make reservations for 4 people at 20:00 on Saturday? Sentence9: What area are they located in? Sentence10: We have 21 options using those requirements. Do you have a preference for any particular cuisine? Sentence11: I'm looking for a 4 star guesthouse. Sentence12: I'm looking for a place to eat in the centre in the moderate price range. Sentence13: i also need a place to stay Sentence14: No I'll take care of that later. But can you arrange a taxi for me? Going from the hotel to The Oak Bistro. Sentence15: Great! Do you have a price range you'd like to stay in or a location that you prefer? Sentence16: the acorn guesthouse is nice, when will you planning your stay? Sentence17: You are most welcome. Have a great day. Sentence18: I have you booked in a white audi to be at the Oak Bistro by 20:00. The cab contact number is 07934977306. Sentence19: do they have free wifi? And I need their phone # Sentence20: I'm looking for a place in the moderate price range and i need free parking. Sentence21: I just need to get to the restaurant for my dinner reservation on Saturday. Sentence22: One of my favorites that fits your preferences is The Oak Bistro. There food is wonderful. Is this a restaurant that you may be interested in? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System