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, go ahead and book it for 2 nights on Thursday for 3 people. Sentence2: Yes it is an entertainment venue and it is located at cambridge leisure park, clifton way. Their telephone number is 08715501010. Is there anything else you would like to know? Sentence3: Yes. Could you please give me the postcode and entrance fee? Sentence4: No thank you, that is everything I needed. Sentence5: No, is there one with free parking and 4 star? Sentence6: Thank you and enjoy your stay! Sentence7: There is a hotel with 0 stars called cityroomz and a hotel with 2 stars called ashley hotel. They both have free wifi. Do either of these interest you? Sentence8: Yes can you help me find a place to stay? I need a hotel that includes free wifi and has a star of 1. Sentence9: Yes please see if there are any other options. Sentence10: Huntington Marriot hotel, the Cambridge belfry and the university arms hotel all have a 4 star rating, free parking and also include wi-if. Can I book any of those for you today? Sentence11: The postcode is cb17dy and I am sorry but we do not have any information on the entrance fee. Can I help you with anything else? Sentence12: Yes could you please give me information on the attraction called Tenpin? Sentence13: Great! You're booked at the Huntingdon Marriott Hotel with reference number O18FI4L8 . May I help with anything else? Sentence14: There are none showing up under that criteria, shall I look at other options for you? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User