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 suggest the slug and lettuce on Green Street. Would you like me to make a booking? Sentence2: Anything in particular you like to do? Sentence3: Okay, I have booked your taxi. It will be a black Volkswagen and your contact number is: 07019317320. Is there anything else? Sentence4: 01223576412 is the phone number. What else can I assist you with today? Sentence5: No thanks, I just need the phone number please. Sentence6: I will need to be picked up by 5. Sentence7: Nope. I am all done. Thanks. Sentence8: You're welcome, have a great day. Sentence9: Please find an expensive restaurant in the centre. Sentence10: I also need a taxi to go between the two. Sentence11: How about a multiple sports place near that restaurant. Sentence12: From the Cherry Hinton Village Center, please. Sentence13: Which place do you want to be picked up from? Sentence14: Yes, please, I need a table for 8 on Tuesday at 17:45. Sentence15: There are many to choose from. What kind of food are you interested in? Asian, gastropub, indian, eupopean? Any idea? Sentence16: Sure, where and when would you like to be picked up? Sentence17: I'd like to find a place to go in town Sentence18: I got your table all booked, your reference # is: O33823V4 . Can I help with anything else today? Sentence19: A gastropub sounds great. Sentence20: the cherry hinton village center is in the east, would you like the address? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User