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: I also would like to find a restaurant serving British food that is expensive. Sentence2: That's alright, I just want to know the phone number and postcode please Sentence3: A grey toyota is booked for you. You can call 07178077198 to contact them. Will that be all for you? Sentence4: Which one would you recommend? Sentence5: Well there are 18 different colleges that match your request. Unfortunately I need more information from you to do my job. Can you help by narrowing down the area? Sentence6: Would you like me to find a British restaurant in the same area as Trinity College? Sentence7: I'm headed off to college soon and want to check out one of the campuses while I'm in the area. Can you help me find one? Sentence8: That is all I need, thank you good bye! Sentence9: Yes, that sounds good! Sentence10: You're welcome, have a safe trip. Sentence11: Fitzbillies Restaurant has a phone number of 01223352500 and a postcode of cb21rg. Is there anything else I can assist you with? Sentence12: I would recommend Trinity College. They're located in the centre of town at postcode cb21tq. You can reach them by phone at 01223338400 and they list a 1 pound entrance fee. Sentence13: Please arrange for a taxi to pick me up from the attraction at 11:30 and take me to the restaurant. Give me contact number and car type. Sentence14: Area doesn't matter. I'll just need an entrance fee, phone number and postcode for any of them. Sentence15: I recommend Fitzbillies Restaurant, would you like me to book it for you? Sentence16: Definitely! What area of town are you planning to visit? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User