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: Sorry, I couldn't find anything. Sentence2: It doesn't matter really. But I want to book for 5 people at 18:15 on wednesday. so whichever one could accommodate that works for me. Sentence3: Great I have you at stazione restaurant and coffee bar at 18:15 and the reference number is ZM5SFSMH . Is there anything else I can help you with? Sentence4: Okay, I need some more information. Do you have a type of food or area where you would like to go? Sentence5: There seems to be an error. Thanks for booking the Italian restaurant. That is all I needed. Sentence6: No that was everything. Thanks Sentence7: I have found a few Italian restaurants located in the centre area of town what price range are you looking for? Sentence8: I am looking for a place that is in the centre and offers the Americas food. Sentence9: where else could ypou suppose i get american food Sentence10: Thank you for using our services. Sentence11: The location is at Market Hill City Centre cb23nj the phone number is 01223352607. Is there anything else I can help you with? Sentence12: Hello. I am looking for a recommendation for a place to eat. Sentence13: I'm not sure, nothing is coming up for that type of food. Would you like to try a different cuisine? Sentence14: How about italian? I love pasta. Sentence15: Just want to confirm, do you need any further assistance? Sentence16: No thank you, that was all I needed. Have a great day. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User