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: Where will you be traveling to? And what day will you be leaving? Sentence2: Yes. It is in the centre of town on trinity lane. Sentence3: no thanks. not necessary. thanks though. goodbye Sentence4: What is the postcode for this place? Sentence5: I need to leave after 14:30 please. Sentence6: thanks for using our service. goodbye. Sentence7: What time would you like to arrive by? Sentence8: Okay. The TR7245 leaves at 15:21. Would you like me to book it for you Sentence9: The postcode is cb21tt. Can I help you with anything else today? Sentence10: Hello, could you tell me where the old schools attraction is located? Sentence11: I need a train leaving Cambridge after 14:30 Sentence12: What is the travel time and how much will it cose? Sentence13: i'm going to stevenage on wednesday. Sentence14: Travel time is 49 minutes, and the price is 12.80. Would you like me to book passage for you? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System