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'm looking for a cheap hotel. Sentence2: That is all for today. Thank you. Sentence3: I'm sorry, that time is not available. Can we try a short length of stay or different day? Sentence4: Yes, I was able to book that. The reference number is U0JT0YZ8 . DO you need anything else? Sentence5: No problem. I'm glad I could help. Sentence6: Actually, you mentioned its in the east. I really prefer something in the centre of town thats cheap and 4-star rated. It can be a guesthouse or hotel. Sentence7: The Alexander Bed and Breakfast is a cheap 4 star guesthouse in the centre of town. Would you like me to book it for you? Sentence8: Are you sure the Alexander is in the centre? You said earlier that it's in the east. Sentence9: alexander bed and breakfast is a guesthouse east of Cambridge center that is cheap, would you like more information? Sentence10: Can you see if they have just 2 nights available? Sentence11: Yes. I'm travelling with my family, so I need a room for 7 people for 4 nights, arriving Thursday. Sentence12: Sorry, that booking was unavailable. Perhaps you'd like a different day or a shorter stay? Sentence13: Does it have a star of 4. I don't care if it has free parking. Sentence14: Yes, it's in the centre. Sentence15: Alexander bed and breakfast does have a 4 star rating, would you like help to book a room? Sentence16: Please double check and make sure the booking is good. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System