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. Please give me the entrance fee, address, and phone number for The Sheep's Green, please. Sentence2: You're welcome, let me know if I can assist with anything else. Sentence3: please do the booking for me..two persons Sentence4: I would prefer the south side of Cambridge. Sentence5: We have an expensive 2 star hotel in the east called express by holiday inn cambridge. It's located at 15-17 norman way, coldhams business park. Do you need a reservation? Sentence6: Just me, thank you. Sentence7: I need to leave the attraction by 11:30. Sentence8: Do they have free parking? Sentence9: How many people will be traveling? Sentence10: Is there a particular area of town you'd like to spend time in? Sentence11: I can do that. I just need to know what time you want to leave or arrive? Sentence12: Thank you, that is all I need for to today. Sentence13: I am looking for a park to go to. Sentence14: I have two parks in the south. The Sheep's Green and Lammas land park fen causeway and the other is Wandlebury Country park. Would you like info on either one? Sentence15: No problem! A red Ford will pick you up from the park, contact number 07109413810. Can I help with anything else? Sentence16: Sorry, don't want to book right now. But I do need a taxi to get between the attraction and the hotel. Sentence17: Thank you. I'm also look for an expensive hotel, not a guesthouse, to stay in. I'd like it to have free wifi and it needs to have 2 stars. Sentence18: Yes they have free parking as well as free wifi. Sentence19: When will you arrive and how many days will you be staying? Sentence20: the phone number is 01223302580 and admission is free Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System