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: Golden wok is a chinese place in the north part of town, would that work for you? Sentence2: No, that's all for me. Thanks! Bye! Sentence3: Okay, how about TR7733, leaving at 17:50 and arriving by 18:07? Would that work for you? Sentence4: In expensive restaurants, I have two options in the north. There is Hakka and there is The Hotspot. In my opinion, Hakka is a great chinese restaurant. Sentence5: Thank you for all your help. We should have a nice anniversary. Sentence6: I'd like that reservation for Tuesday, as well. Sentence7: Can you also help me find a Chinese restaurant on the north side? Sentence8: They are in the north, postcode is cb41ep. Expensive and their phone number is 01223568988. That was for Hakka. Sentence9: What? Could you please make the reservation? Sentence10: postcode, phone number, and area Sentence11: Yes I am looking for a train that arrives by 20:00 that is going to ely Sentence12: It was a pleasure to assist you. I hope you have a Happy Anniversary! Sentence13: Happy Anniversary! Golden wok is a moderately priced restaurant. Would you like me to find an expensive restaurant? Sentence14: Yes, I would prefer an expensive one. Sentence15: I have one that will arrive by 18:07. Do you have the day you would like to travel? Sentence16: Great, is it considered to be expensive it's my anniversary and I want it to be high quality food Sentence17: Perfect! I hope you have a great time! Sentence18: Yes, I'd like to travel on Tuesday, departing from Cambridge please. Sentence19: Which day would you like this reservation? Sentence20: Can you go ahead and make that reservation for me please. for 6 people at 14:30 Sentence21: Yes, that's exactly the sort of thing I'm looking for. Thank you. Sentence22: I have that table reserved for you. The reference number is HFSFXR46 . May I help you with anything further? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User