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: The first train leaving Stansted Airport after 17:45 leaves at 18:24. You'd arrive in cambridge by 18:52. Would you like me to book a seat on this train? Sentence2: Sorry about that. The postal code is cb58bs. Sentence3: There are many attractions. Churches, cinemas, colleges, and art gallery's. Do any of those sound appealing? Sentence4: To Cambridge, from Stansted Airport. Sentence5: Can you give me a few samples? I'll need the entrance fee, too. Sentence6: All Saints Church is free to get in as is Holy Trinity Church. Would you like more information? Sentence7: You are welcome. Enjoy your stay in Cambridge. Bye. Sentence8: Thanks so much for your help today, that was everything I needed. Sentence9: Yes. Postcode, phone number and entrance fee's if any of All Saints Church. Sentence10: Could you give me a little more information? Where will you be traveling to and from? Sentence11: Yes, I still need the postcode for All Saints Church. Sentence12: Yes please, what is the Train ID and price? Sentence13: That won't be necessary but thanks anyway. Although, I could use some help finding an attraction in the centre of town. Sentence14: Their phone number is 01223452587. There is no entrance fee. Is there anything else that i can help you with? Sentence15: I need a train leaving Thursday after 17:45. Sentence16: The train ID is TR5433 and the cost is 10.10 GBP per ticket. Would you like me to book this trip for you? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System