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: Sure, I can help you with that. What area would you like to stay in? Sentence2: Do you prefer a guesthouse or hotel? Sentence3: Thanks so much. I am also wanting to see if you can help me find a cheap room to stay in. Sentence4: the cambridge belfry is the only hotel with those criteria. Sentence5: I would like a hotel with a 4 star rating please. It also must include free wi-fi. Sentence6: Sure. There's quite a few places you can visit in the Centre. Do you have a particular type of attraction in mind? Sentence7: There is a great museum in the centre of town called castle galleries. It's free and located at unit su43, grande arcade, saint andrews street. Sentence8: Hi! I'm looking for a place to go in the centre. Sentence9: kindly find me one in the west Sentence10: May I have the phone number please? Sentence11: Thank you for the address. That will be all for now. Sentence12: The phone number is 01223307402. Sentence13: The address is back lane, cambourne. Is there anything else I can help you with? Sentence14: I have never been to the Centre before, can you tell me the most popular spot to go? Perhaps a museum. Sentence15: Have a great time and I hope you enjoy your stay! Goodbye Sentence16: That will work.I need the address please. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System