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 need a taxi to take me to the restaurant from the museum. Sentence2: The Cambridge and Country folk museum is located in the west. It has an entrance fee of 3.50 pounds. Can I tell you anything else about it? Sentence3: No that will be all thanks so much. Sentence4: I'm so sorry! Checked my sources and don't see a Singaporean restaurant in any part of town. May I help you in some other way? Sentence5: Yes Can you find me a hotel that is cheap? Sentence6: no thanks that is all Sentence7: enjoy your stay with us! Sentence8: Excellent. You are all set with a red Skoda. The contact number is 07563648759. Anything else I can help with? Sentence9: I need to get to the restaurant in time for the reservation. Sentence10: In what area would you like the hotel to be? Sentence11: There are none available, do you have another type of food. Sentence12: A table is booked for Saturday for 15:45 at 8 and for 8 people. Reference number is B00KVHN Sentence13: There are several. May I suggest Curry Garden is located in the Centre and has an expensive price range. Would you like a reservation? Sentence14: What time of day would you like this booking for? Sentence15: Sorry that last sentence must have been a bad connection, disregard that. Still looking for a restaurant, are there any expensive indian ones in the centre? Sentence16: Yes, can you book a table for 8 people on Saturday at 15:45? Sentence17: Hello, can you help me find a pricey Singaporean restaurant in Cambridge? Sentence18: I sort of really had my heart set on Singaporean food. Sentence19: Is there anything else I can help you with today? Sentence20: I'm also looking for a place called cambridge and country folk museum. Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System