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: Hello! I'm looking for a restaurant that serves modern global food in the centre. Sentence2: Your taxi is booked. Be expecting a red Skoda. Please call 07595199284 should you need them. Sentence3: How about a 4 star rating. I need it booked for 5 people, 4 nights starting from Tuesday and I will need the reference number. Sentence4: I know this sounds crazy, but I'm looking for an expensive hotel with a 0 star rating. The area doesn't matter so much. Sentence5: No, you were very helpful, thanks for everything. Sentence6: There are about 5 options. All are hotels and expensive. They are located all over. Do you have a certain area in mind? Sentence7: You are very welcome. Enjoy your dinner party! Sentence8: No problem! I booked you the University Arms Hotel located in the Centre, reference number 9DOCJURL . May I help with something else? Sentence9: Thanks so much! Can you please book me a taxi between the two places, arriving at the restaurant by the time of the reservation? Sentence10: We have nine Italian restaurants in the center. Does price range matter? Sentence11: I recommend pizza express. You're booked for 14:15, and the table will be held for 15 minutes. The reference number is MBGJNXHM . Do you need anything else? Sentence12: I'm glad I could assist you today. Good-bye. Sentence13: I actually could use some help finding a place to stay also. Sentence14: OK, do you have any specifics in mind, such as area or price range? Sentence15: Hmm, okay, I guess I could settle for Italian. Are there any of those in the centre of town? Sentence16: that will be it for now. good day Sentence17: I'm sorry, but there are no Modern Global restaurants anywhere in Cambridge. Sentence18: I like nice places, so definitely something expensive. I do want it to have free wifi though. Sentence19: Moderate price range is fine. I will need a reservation for 5 people at 14:15 on Tuesday. Sentence20: Unfortunately, I don't have anything matching your criteria. Can I adjust the star rating or price range? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System