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: gonville and caius college's postocode is cb21ta and their phone number isv01223332400 Sentence2: I actually want a hotel with 0 stars, I don't like stars. Sentence3: thank you that will be all Sentence4: I am not finding anything like that, something else perhaps? Sentence5: There are 3 entries that meet your criteria. I would recommend the A and B guesthouse or Avalon as they both get 4 stars. Sentence6: You're all set. Your Reference number is : F2PPHLSX . Sentence7: Can I also get a place to stay, needs to include wifi but I dont care about parking. Sentence8: You're very welcome. Enjoy your stay! Sentence9: Could you suggest one and provide the postcode and phone number? Sentence10: Yes, there are 13 colleges in the centre of town. Sentence11: Yes, I would like to book it for 2 nights starting from Monday for 6 people. Please let me know the reference number. Sentence12: How interesting that there's NO entertainment in the centre of Cambridge, sound like a fun town... perhaps there is a college I could visit? Sentence13: Okay I have one option for you called Cityroomz. Would you like me to book that for you? Sentence14: i am looking for places to go in town. The attraction should be in the centre and should be in the type of entertainment. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User