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: Not in the centre. Do you have any other locations in mind? Sentence2: You, too. Thank you for calling. Goodbye. Sentence3: I am looking for a attraction in the type of entertainment please,. Sentence4: Thank you. Can yo also find an entertainment attraction in the centre of town? Sentence5: Yes. I would like to book 4 people. Sentence6: Thank you very much. Have a great day. Sentence7: Train TR0146 should fit the bill. Would you like me to book you passage? Sentence8: There's plenty to choose from, and most of them have free admission. Sentence9: I've made those reservations the reference number is 2LAGCY07 and the price is 71.59 GBP. Sentence10: No, that's it. You've been very helpful. Have a great day Sentence11: how about something to do with architecture in the centre? Sentence12: Have a wonderful time. Sentence13: Where would you be departing from? Sentence14: I will be leaving from Cambridge sometime after 7:00pm. Sentence15: What about an attraction featuring architecture? Sentence16: Can you try again? There must be something. Sentence17: I would like a architecture in the centre please. Sentence18: I recommend great saint mary's church, they are at market square, postal cb23pq, phone is 01223350914, entrance fee is 2 pounds but it is worth the admission. Any further questions? Sentence19: I am sorry something more specific? Sentence20: For some reason there are no entertainment attractions in the centre of town, are you able to go to another part of town? Sentence21: I dont have anything of the kind, should I look in another area? Sentence22: I'm looking for a train to leave on thursday to arrive at broxbourne. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User