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: No, the location is flexible. Can you tell me if Rosa's offers free parking or wifi or both? Sentence2: Yes please. I need to book it for 7 people. Can I please get the reference number after it's booked? Sentence3: I'll need to travel on Sunday, from Cambridge to Broxbourne, and I'd like to arrive by 10:15 please. Sentence4: I need a train to Broxbourne. Sentence5: Yes I need it for Friday for two nights for 7 people please. I will also need the reference number. Sentence6: All set- your reference number is 9ZLD8Y9E . Can I help you with anything else? Sentence7: TR4249 leaves at 06:01 and arrives at 07:01 giving you plenty of time. Can I book that for you? Sentence8: I want it to have star of 4, and include free wifi. It doesn't need to have free parking. Sentence9: Do you have a preference for the area, stars, internet or parking? Sentence10: No thank you. That is all. Have a good night. Goodbye Sentence11: There are many trains available. Will you be traveling on a certain day or at a specific time? Sentence12: goodbye, and you're welcome Sentence13: Does location matter? The Alexander is a popular choice in the center, but Rosa's is a favorite in the south. Sentence14: Yes, Rosa's Bed and Breakfast provides free parking. Would you like me to book that for your? Sentence15: I have it booked for you. The total fee is 100.24 GBP and the reference number is JIXSCT7D . Is there anything else I can help you with? Sentence16: Yes, I need a cheap place to stay. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System