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 need it for 2 people at 18:15 on Wednesday. Can I get a reference number please? Sentence2: Sure, Churchill College is popular. It's free admission and is located on Storey's Way. The post code is cb30ds. Sentence3: I really love bistro food Sentence4: we have british, european and indian food all in the west Sentence5: You're welcome! It's been a pleasure! Sentence6: No, can you recommend a popular one for me? Sentence7: Can you look again for me in the same area? Sentence8: How about some high end indian food? There's a place called nice boat, their phone number is 01223302800 and they're on 37 Newnham Road Newnham. Sentence9: Okay, I have you all set! The reference number is GOMW9RVX . Have a great time! Sentence10: Thank you. Take care. Goodbye Sentence11: Graffiti is a lovely British restaurant. Can I make a reservation for you? Sentence12: Ok, how about a restaurant that serves british food? Sentence13: There are 5 colleges in the west. Would you like more information on any of them? Sentence14: Unfortunately, there does not seem to be any bistros in the west side of town, I can look in other areas if you'd like? Sentence15: Great! I'm also looking for an expensive restaurant near the college. Sentence16: i am looking for places to go in town. The attraction should be in the type of college and should be in the west. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User