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 arrive by 8:30 Sentence2: Sure, I can help you get here. Where will you be leaving from? Sentence3: Thank you! Can you please tell me the phone number, entrance fee, and address? Sentence4: I will be coming in from Ely on Tuesday. Sentence5: Glad to have been of help. Please reach out again if you need anything else. Thanks for using the Cambridge TownInfo centre. Have a great day. Sentence6: I can help you with that. Do you have a certain departure or arrival time? Sentence7: Great I also am looking for some info on a place called sidney sussex college Sentence8: the phone number is 01223338800 and address is Sidney street Sentence9: Ok, great. Then it will get me there in time. Can you book me 8 tickets please? Sentence10: thanks. that will be it for now Sentence11: I have booked your train for 8 and a cost of 35.2 GBP. Your reference number is 53GSF184 . Can I help you with anything else? Sentence12: I am planning a trip in Cambridge. Sentence13: What time does it arrive? Sentence14: Okay the TR6971 leaves at 07:35. Does this work? Sentence15: It arrives at 07:52. Would you like to book tickets? Sentence16: I can help with that. Sidney Sussex College is a college in the centre. Do you need any other information? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User