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: Restaurant Two Two's phone number is 01223351880, the address is 22 Chesterton Road Chesterton, and the postcode is cb43ax. Sentence2: How many people do you need the booking for? Sentence3: I have 7 different options. I have all different price ranges. Do you have a preference? Sentence4: Thank you and enjoy your visit to cambridge. Sentence5: No, I don't need a reservation. I could use the address, postcode and phone number though. Sentence6: Great. Thanks for all your help! Sentence7: Great! I'm also looking for a restaurant in the same area as the hotel that serves expensive french food. Sentence8: What day would you like your reservation to begin, and how long would you like to stay? Sentence9: Yes it does! Free parking too. Sentence10: I would prefer a hotel with a 4 star rating. Sentence11: I have found 11 results for places in the north that have free parking, would you prefer a guesthouse or hotel? Sentence12: There is nothing that fits that criteria, can I look up something else? Sentence13: Actually, I need to know, does the Acorn guesthouse have internet? Sentence14: Just one person please. Sentence15: Need a hostel, free parking and in the north please. Sentence16: Restaurant Two Two is an expensive french restaurant on the north side. Would you like me to make a reservation for you? Sentence17: It can be a guesthouse or a hotel. Does that open up my options? Sentence18: Any one of them would be fine. Can I get the post code and phone number? Sentence19: The acorn guesthouse is at 154 chesterton road postcode cb41da. Their phone is 01223353888. Can I make you a reservation? Sentence20: Yes please make a reservation. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System