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: Ok, sounds good. What is the price? Sentence2: I want it to arrive at the restaurant at the booked time. Sentence3: can I please have the contact number for the taxi? Sentence4: Sounds great! I'd like to book a taxi to commute between the two. Sentence5: Can I get the reference number on that? Also I would like to book a restaurant as well in the same price range Sentence6: There aren't any cheap 3 star hotels that have free wifi. Do you have alternative preferences? Sentence7: There are 2,one in centre,and one in the south,which would you like more? Sentence8: Okay I have you booked at the Lensfield Hotel starting Thursday for 5 nights for 2 people. Anything else I can do for you? Sentence9: Alright, when would you like to leave and arrive by? Sentence10: Good night, enjoy your stay at cambridge. Sentence11: I am unable to get a reservation for 2 at 17:45. Should I try a different time? Sentence12: You have a reservation for 2 at Eraina on Thursday at 16:45. Your reference number is 80V5LKSU . Sentence13: Could you try european? I'd like a booking for the same group of people at 17:45 on the same day. Sentence14: The one in the south. Can you book it for me? Sentence15: Yes I suppose, how about 16:45 instead? Sentence16: I need a hotel to stay at that is 3 stars. I would preferably like one that has free wifi at it, and possibly close to the local restaurants. Sentence17: ok i have a yellow ford able to pick you up! Is there anything else I can do for you? Sentence18: I apologize, I do not have any fusion options available in the town centre. Would you like to try another type of food? Sentence19: I would like fusion food and please make sure the restaurant is located in centre. Sentence20: Of course, my apologies for the oversight. Their contact number is 07149496005. Sentence21: How about one in the expensive price range? Sentence22: I need it booked for 2 people for 5 nights starting Thursday. Sentence23: Oh, that won't work. I need it to be cheap. Sentence24: Try gonville hotel located at gonville place. Sentence25: Great. Looks like I have all the information I need. Thanks so much. Bye. Sentence26: Of course, the reference number is 41A4LS9O . We have 57 restaurants in the expensive price range. What type of food are you interested in eating? Sentence27: Gonville hotel is in the expensive price range. Sentence28: I can book the lensfield hotel, how many people will be staying? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System