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: There are quite a lot of different places in the centre. Do you have a particular type in mind such as architecture, college, museum etc? Sentence2: I recommend great saint mary's church. Its postcode is cb23pq and the entrance fee is 2 pounds. Sentence3: The booking was successful. The table will be reserved for 15 minutes.Reference number is : ULSWHGVK, anything else? Sentence4: Yes please book it for 4 people at 11:15 on Monday. Sentence5: absolutely. Look for a white tesla. Its number is 07550780265 in case you need to reach them. Sentence6: I need to leave the church for lunch at the restaurant before the booked time. Sentence7: Hi, I am looking forward to trying some local restaurants when I visit Cambridge next month. Are there any good ones? Sentence8: It's a pleasant to help you. Please call back if you need further assistance in the future. Sentence9: It has been a pleasure talking to you. You have helped me get all I need. Thank you and goodbye. Sentence10: There is wagamama in 36 Saint Andrews Street, would you like me to book for you? Sentence11: Sure, just let me know your departure location, destination and when you are going to travel. Sentence12: Thank you very much. Actually, can you also reserve a taxi for me? Sentence13: Yes, can you tell me some tourist places in town that are in the same area? Sentence14: Yes, I'd like to find a Japanese place in the centre. Sentence15: We have a lot of good restaurants in the city. Do you have a preference in the type of food you want? Sentence16: As long as it is in the same area it doesn't matter, please recommend one. I want its postcode and entrance fee as well Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User