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 would like to go to ely, and arrive by 17:45. Sentence2: The address is Little Saint Mary's Lane. Is there anything else you need to know? Sentence3: No thank you that will be all Sentence4: Can I get the address, please? Sentence5: i want to leave as late as possible and still arrive by 17:45. Sentence6: I can book you on the TR6745 leaving at 15:50 and arriving at 16:07. Sentence7: What about architecture in the centre? Sentence8: It was nice talking to you. If you need assistance in the future, please don't hesitate to text us again. Goodbye! Sentence9: How many tickets will you need? Sentence10: Do you have a time you would like to leave? Sentence11: Great. I also need a multiple sports attraction in the centre of town. Sentence12: I need to leave from Cambridge on Wednesday. Can you help me find a train? Sentence13: That sounds wonderful! Sentence14: That train will leave at 15.50 and arrive at 16:07. the cost is 4.40 pounds. Sentence15: I don't need a ticket, I just need to know the price and travel time, please. Sentence16: I recommendvLittle saint mary's church don't let the name fool you, they are large and have a lot to see, would you like more information? Sentence17: We have several that fit the bill, do you have a destination? Sentence18: i dont happen to have any multiple sports venues in the centre. would you like me to find something else? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User