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: Okay, the phone is 01223304050 and postcode is cb12tz Sentence2: No, would you be able to look into another hotel for me? Do you have any hotels that have 0 stars and are in the moderate cost range? Sentence3: We have a three star and a four-star hotel. Did you have a preference? Sentence4: Great! I can help you with that. We have boats located in the east, north, and centre area. Which area you prefer? Sentence5: Okay, that's all I need. Thanks, bye Sentence6: i will be in Cambridge and i am looking for a boat Sentence7: I found a hotel that fits your need. Would you like for me to book a room? Sentence8: Thanks for the info! I also need a place to stay in the centre of town. I'm looking for something in the expensive price range. Sentence9: No thank you. I would just like the number and postcode for Cityroomz. Sentence10: Have a wonderful time. Sentence11: Okay, the Riverboat Georgina is located in the north on cambridge passenger cruisers, jubilee house. Post code is cb43ax and phone number is 01223902091. Sentence12: I do not care it should be in the centre and should be in the expensive price range. Sentence13: I have found 1 hotel that meets your needs. It is Cityroomz. Would you like me to book it for you? Sentence14: How about in the north? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System