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 need to depart from Cambridge and arrive at Stevenage. I need to leave after 12:30 on Saturday. Sentence2: Greetings, I am planning a trip in Cambridge and am looking for entertainment venues in the centre of town. Sentence3: The Museum of Archaelogy and Anthropology is located in the center of town. Sentence4: I have a 13:21 train departing Cambridge and arriving in Stevenage at 14:10 on Saturday. Would that work for you? Sentence5: Okay, sounds good. Will you book that for 4 people and get me a reference number, please? Sentence6: There are 5 different entertainment venues in cambridge, however known are located in the centre. Did you want to visit on in a different part of town? Maybe the east? Sentence7: I also need a train. Sentence8: Thank you can I have the entrance fee, postcode, and phone number? Sentence9: No that was all, I got the reference number. Have a great day. Sentence10: there are several trains, where is your departure and when? Sentence11: We don't have anything listed under entertainment for the centre area, but there are a variety of other things to do. Are you interested in the theater or perhaps the cinema? Sentence12: No I prefer the centre area. Sentence13: Sure, there isn't an entrance fee, that's nice. The phone number is 01223333516 and the postcode is cb23dz. Sentence14: What about a museum in the center of town -- is there anything like that? Sentence15: It has been my pleasure. Feel free to contact us with any questions that may arise. Sentence16: Yes, that's perfect! Sentence17: Alright, your train tickets have been booked and your reference number is ZEWG9O60 . Is there anything else I can help you with? Sentence18: It appears that TR6998 will be your best bet. It leaves at 13:21. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System