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 will be going to ely. Sentence2: Anything else you need? Sentence3: Yes, please book it for me. Sentence4: I need the post code and attraction type of all saints church please. Sentence5: Yes that sounds like a great place to visit. Sentence6: I need a train that leaves cambridge on monday after 09:15 Sentence7: That's all I need today. Thanks! Sentence8: Yes, that will be sufficient. Sentence9: The attraction type for All Saint's is architecture and the postcode is cb58bs. Is there anything else I can help you with? Sentence10: You're welcome. Have a great day. Sentence11: Where will you be going? Sentence12: On second thought, a booking will not be necessary now. The train ID you supplied is sufficient. I am looking for places to go while I'm in town. Sentence13: TR8399 leaves Cambridge at 09:50 and arrives by 10:07, does this suit your needs? Sentence14: No problem. What type of attraction are you interested in? There is lots to do here. Sentence15: It doesn't matter what type, you pick! Sentence16: I will work on that now and be back with you in a moment. Sentence17: all saints church is located in the town centre. its very popular this time of year. wou.d this work for you? Sentence18: Would you like me to book this for you? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User