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: Great. Thank you so much. Sentence2: I have made reservations at Bangkok City for you. Your reference # is G8TQWL1A . Is there anything else I can assist you with? Sentence3: I cancelled the previous booking for Bangkok city. I found 3 British restaurants in the centre. fitzbillies restaurant, the cambridge chop house, and midsummer house restaurant. Any preference? Sentence4: Thank you for calling. Sentence5: that should be bangkok city. its address is 24 Green Street City Centre,cb23jx. you need the phone number? Sentence6: Do you prefer a hotel or a guesthouse? Sentence7: Are there any other options in the type of hotel, please? Sentence8: Please book University Arms for 3 people 4 nights on thursday. Send the reference number too ok? Sentence9: Ok, I was able to change the booking. Your new reference number is: FLG9ZMC2 . Can I help with anything else? Sentence10: i am also looking for a place to stay in the centre that offers free wifi. Sentence11: I would like a guesthouse in the expensive price range, please. Sentence12: There are no Jamaican restaurants in the centre. Would you like to try another area or another food type? Sentence13: You got it. Your reference number is YUT2VZIR . Sentence14: I have two expensive hotels in the center offering wi-fi. Gonville is a 3-star hotel, and University Arms is listed as a four-star property. Both offer free parking as well. Sentence15: No thanks. Just go ahead and book a table for 3 people at 14:30 on thursday. Sentence16: I really want jamaican food. Can you check another area? If you find one it should be expensive. If not I'll try Thai in the centre. Sentence17: I'm sorry, there doesn't seem to be a Jamaican restaurant in Centre. Would you like me to look for something else? Sentence18: Are you sure? It should be expensive. Sentence19: I'm sorry I didn't pull up any matches. Sentence20: Okay, can I please have a reservation for Midsummer House Restaurant? Thank you so much for your patience with me! Sentence21: I'm sorry to be a bother. Instead of that reservation, I would be ok with British food. Is there a British place in the centre? Sentence22: I'm planning a trip to cambridge and need a place to dine. Can you find something that serves jamaican food in the centre? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User