Domains: Travel_15, Events_25, Hotels_25, Buses_25

user: I'm looking for an attraction to go to in Philadelphia, maybe a historical spot.

system: How about the Ben Franklin Bridge historical landmark?

user: Is it free admission?

system: It sure is.

user: What else is there?

system: Maybe you'd like the Betsy Ross House historical landmark?

user: Maybe. What else is there?

system: Another interesting historical landmark is Elfreth's Alley.

user: Is it a child-friendly place? And could I have the phone number?

system: It's not child-friendly, no. The telephone number is 215-574-0560.

user: Fine, thank you. I'd also like to find something to do there.

system: What kind of thing are you interested in?

user: Something sports related.

system: How about Eagles Vs Cowboys at Lincoln Financial Field?

user: Are there any other football events?

system: I also have Owls Vs Bison at Lincoln Financial Field.

user: Sounds like fun.

system: How else may I help you?

user: I need a house to stay in.

system: I have 10 houses. There's a 4.4 rated house at 1 Logan Square.

user: Sounds good to me.

system: Shall I reserve it for you?

user: Not right now. I need a bus ticket, too please. I'd like an economy extra fare please.

system: Is that a March 12th departure?

user: On Sunday this week, please.

system: Leaving from where?

user: I'm going from Washington.

system: There's a $43 economy extra fare at 7:10 am.

user: Which bus stations does it use?

system: It goes from Union Station to Intercity Terminal.

user: Sounds great, thanks.

system: Are you ready to buy tickets.

user: Not right now.

system: Anything else today?

user: No, I'm good.

system: Thank you very much.