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 looking for a guesthouse in the centre of town. Can you find one for me? Sentence2: Thank you, you have been very helpful. I think that is all I need. Sentence3: Can you tell me their postcode? Sentence4: El shaddai has 0, but alexander bed and breakfast has a 4 star rating. Sentence5: Yes I am happy to say I was able to book that hotel for you. The reference number is KVV2ZTNK . Sentence6: There are many attractions in the centre area, are you interested in architecture, museums, parks, nightclubs, swimming pools? Sentence7: Great, I'm also looking for something to do in that same area. What is available? Sentence8: How many people will be staying at the hotel? Sentence9: How many stars does El Shaddai have, I'm looking for a place that is at least a 3 star location? Sentence10: The all saints church is a terrific site for architecture buffs. It's on Jesus Land and has free admission. Sentence11: Just surprise me with something. Sentence12: Yes, what dates would you like me to reserve that for? Sentence13: Sure, I've booked a red honda for you. Its contact number is 07371414690. Sentence14: The post code is cb58bs. Can I help you with anything else today? Sentence15: El Shaddai is located at 41 Warkworth Street. They offer free internet and parking. Sentence16: It's really important to me to have 3 stars, no more, no less. Are there any hotels that match that description? Sentence17: Yes, could you book a taxi for me? I'd like to leave The Gonville Hotel by 24:00, going to All Saints Church. Sentence18: That will work. Can you make a reservation for 8 people, please? Sentence19: Starting Sunday and for 3 nights please. Sentence20: For 8 people please. Can I also get the reference number? Sentence21: You are welcome, enjoy the church. Goodbye. Sentence22: The Gonville Hotel is a hotel, not a guest house, but it has 3 stars and is in the city centre. Will that work for you? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User