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 didn't happen to have any barbeque restaurants but I did find a japanese restaurant in the centre of town. It's called Wagamama. Can I book that for you? Sentence2: Ok. Where are you going? Sentence3: The acorn guest house is the highest recommended guesthouse with 4 stars. Sentence4: Not really, but which of these have the best rating? Sentence5: Yes I'm looking for somewhere to eat that does barbecue? Is there anywhere like this in the city center? If there's no barbecue, what about Japanese? Sentence6: Yes their address is 36 Saint Andrews Street. Will there be anything else? Sentence7: You're very welcome. Thanks for contacting us here at the Cambridge TownInfo centre and I hope you have a great day! Sentence8: Yes, that will work. Can I get the restaurant address please? Sentence9: I have several places that meet your needs. Is there a specific part of town you'd like to stay in? Sentence10: I guess first I'd better find a place to stay. I'm looking for a moderately priced guesthouse and it should include free wi-fi and parking. Sentence11: Ok, could you give me the address, phone number, and postcode please? Sentence12: No, that is all I need at this time. Thanks for your help. Have a nice day. Sentence13: I need a taxi. Sentence14: Certainly, acorn guest house is located at 154 chesterton road, postcode cb41da, and their phone is 01223353888. Can I help you with anything else? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System