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: Is should serve Basque food. Sentence2: Ok, I am happy to do so. I will need the day and where you are going to. Sentence3: Yes, De Luca Cucina and Bar is located at 83 Regent Street,cb21aw. The phone number is 01223356666. Sentence4: Definitely. Do you have a food type preference? Sentence5: It looks like there aren't any basque places in the centre area of town. Would you like me to search elsewhere? Sentence6: I'll be sure to call you if I need anything else. Sentence7: how about modern european food then? Sentence8: Okay, perfect. Have a great day. Sentence9: Thank you, please book me for 7 people, and I will need the reference number. Sentence10: Great! That's all I needed! Thank you! Sentence11: Okay great. Good bye. Sentence12: Yes, there is a modern european restaurant available on Monday. Should I book it for you? Sentence13: Okay, great. Your booking was successful! Your reference number is 87VJOBNO . The total fee is 115.5 GBP that you can pay at the station. Sentence14: Can you just give me the phone number and address? Sentence15: I am going to Peterborough and leaving on Monday. Sentence16: Can you find me a moderately-priced place to eat in the center of town? Sentence17: Can you please help me find a train out of cambridge that arrives by 19:15? Sentence18: Okay! What time of day would you like to leave? The train ride is only 50 minutes long. The last train of the day departs at 18:06, and arrives at 18:56. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System