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: The phone number for All Saints Church is 01223452587 and it's postcode is cb58bs. Can I help you with anything else today? Sentence2: You're welcome. Have a great time! Sentence3: The Copper Kettle is an excellent choice for British cuisine. Alternatively, there is also an asian oriental restaurant. Do either of those sound suitable? Sentence4: The Copper Kettle's phone number is 01223365068 and the address is 4 Kings Parade City Centre, postcode cb21sj. Would you like me to book a table for you there? Sentence5: Are their any architecture in the centre of cambridge? Sentence6: I would like to suggest all saints church. The entrance fee is free. Sentence7: Excellent, could I also get its postcode and phone number? Sentence8: Certainly, pick out a good option. I will need the entrance fee please. Sentence9: No, thanks. I will book later on. I think that was all I needed. Thanks. Goodbye. Sentence10: Could you give a recommendation on a place to eat in the centre that is in a moderate price range? Sentence11: I'll go with The Copper Kettle. Can you give me the phone number? Sentence12: Yes! There are 4 churches as well as old schools. Would you be interested in one of those? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User