You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Ex Input:
Sentence1: How about the Alexander bed and breakfast in the centre? It is a cheap 4 star guesthouse with free internet and wifi. Sentence2: That sounds like it might work. Could you check availability for two people this weekend? Sentence3: Does this place include free parking? Sentence4: I am unsure at this time. Sentence5: I am glad to help. Have a nice day. Bye. Sentence6: I live in the centre of town and want to see if I can find a reasonable room for my parents to stay while they are visiting. Sentence7: Okay, would you like some more information about that hotel? Sentence8: You have been very helpful. I have everything I need, thanks. Bye Sentence9: The address is 56 saint barnabas road. Sentence10: What day are they arriving, and how many nights are they staying? Sentence11: The alexander bed and breakfast is a cheap, 4 star guesthouse in the centre area, It has wifi and parking. Does this fit your needs? Sentence12: Can you tell me what the address is? Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Yes, both the Hobsons House and the college are both in the west part of town. Would you like information for the college? Sentence2: Booking completed! Your ca is a black lexus and the contact number is 07301130189 Sentence3: It doesn't matter. Sentence4: Queens college is quite pretty. It is on Silver street in the west. Sentence5: Perfect! That's all I need today, thank you! Sentence6: No, I need something in the western part of town. Sentence7: There are lots of churches in the centre of town. Would you like to visit one? Sentence8: What would you recommend? I don't have a preference. Sentence9: There are many colleges and museums on the west side. There is also one entertainment center. Which do you prefer? Sentence10: Do you know when you want to get there by? Sentence11: You are very welcome. Glad I could help. Have a nice day. Sentence12: Is it near the Hobsons House hotel? Sentence13: Actually, the college sounds great. I don't need more info. But I would love a taxi to get me from Queens College to Hobsons House. I want to leave by 16:30. Sentence14: Hello. I'm looking for a few good places to see in town on my next visit to cambridge. Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Sure, I need a 4 star guesthouse with wifi and parking. The area doesn't matter. Sentence2: No specific area. I would like it to have free wifi and 4 stars. Sentence3: Alright, you're all booked. Your reference number is JAKFVTLQ . Can I help with anything else today? Sentence4: I am not particular as long as it has a 2 star rating, free wifi and is a guesthouse. Sentence5: What part of town do you want to stay in? Sentence6: I have 16 entries that are a match. What area would you like the hotel in? Sentence7: how about the archway, its moderately prices and has free wifi and parking? Sentence8: Can you tell me what type of attraction this is and the entrance fee? Sentence9: I'm looking for info on soul tree nightclub. Sentence10: I'm sorry, can you just clarify whether you prefer 2 or 4 stars? Sentence11: Thank you so much for your help. That was all I needed. Sentence12: Sure. Soul Tree Nightclub is a nightclub attraction. The entrance fee is 4 pounds. Sentence13: i need a guest house which has free parking Sentence14: That sounds good. I'd like to book a room for 2 people starting on Saturday and lasting 5 nights. Sentence15: You're welcome! Have a great day! Sentence16: It's located in the centre. Here's the phone number 01223477900. The address is 1-6 corn exchange street Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System