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'll be visiting Cambridge soon and would like some information on Hughes Hall. Sentence2: Perfect! I am also looking for a train to Kings Lynn leaving after 10:00 Sentence3: Thank you! Sentence4: Booking was successful, the total fee is 68.6 GBP payable at the station . Reference number is : RWVC9XY8 . Sentence5: No. Thanks for all your help. Bye! Sentence6: TR7548 leaves for Kings Lynn at 10:11 and arrives by 10:58. Will that work for you? Sentence7: Yes. Can you book 7 tickets please? Sentence8: It is a college located in the centre of town. Sentence9: Thank you for using this service goodbye Sentence10: Can you give me the area, address, and entrance fee, please? Sentence11: I have 98 trains to kings lynn leaving after 10:00. Do you have a more specific time frame? Sentence12: it is located in wollaston road,cb12ew. entry is free and is in the centre. Sentence13: is there anything else i can help with ? Sentence14: i'm leaving on a tuesday Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User