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 would like to stay in a guesthouse that has free parking. Sentence2: Could you please recommend one? Sentence3: Yes, I found 5 guesthouses they have moderate price range, free parking, 4 stars and 3 stars.Which one will you prefer? Sentence4: It does not matter but I would need the entrance fee Sentence5: No, that is all I need today. Thank you so much. Sentence6: What area would you like to stay? Sentence7: i need a place to stay. Sentence8: Okay, I recommend the Acorn Guest House. Sentence9: Booking was successful. Reference number is : FTFRIGTY . Can I help with anything else? Sentence10: Okay! Would you like to stay in a hotel, or a guesthouse? Sentence11: Your taxi is booked. Their contact number is 07080927615 and they will be picking you up in a white lexus. Is there anything else I can help you with? Sentence12: I'd recommend Club Salsa. It's in the centre and the entrance fee is 5 pounds. Can I help with anything else? Sentence13: We live in the north so something close by. Sentence14: What area would you like it to be in? Sentence15: I need more information on your price range. Sentence16: Sure, coud you find one in the north? Sentence17: I would like to stay in the moderate price range. Sentence18: Yes! I'm also looking for a nightclub in town Sentence19: There are several 4 star options as well as a 3 star and also a 0 star option. Do you have a preference? Sentence20: I have found 7 guesthouses that meet your specifications and are in the moderate price range. Would you like me to make a recommendation? Sentence21: Thank for using the Cambridge TownInfo centre. Goodbye Sentence22: Ok great. I need a room for 3 people and 4 nights starting from Monday. Sentence23: Whatever is available, please book me for 3 people on 4 night starting monday. Sentence24: Yes I need a taxi leaving the attraction at 21:30. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User