Domains: Travel_15, Hotels_25, Flights_45

user: Can you please find some interesting attractions for me to visit?

system: Sure, but first tell me in which area should I search.

user: Please search in London, England.

system: I found 10 attractions matching your criteria out of which I think you should see a great Historical Landmark, the 30 St Mary Axe (The Gherkin)

user: Do you know if they charge entrance?

system: No, entrance is free to this attraction.

user: OK, sounds perfect!

system: Is there anything else I could do for you?

user: Yes, please find me a house to stay there, for two persons, rated at least 4.0.

system: I found 10 houses matching your criteria, out of which I recommend 1 Addington Street rated at 4.0.

user: Anything else, rated at least 3.9?

system: There's also 1 Baffin Way, rated at 3.9.

user: This one sounds perfect. Now let's find me a round trip flight to there.

system: OK, but first tell me from where will you be departing?

user: I'm travelling from Washington.

system: When do you plan on travelling?

user: I'd like to travel on the 1st of March.

system: Perfect, now tell me when do you plan to return.

user: I'd like to return on March 12th. I forgot to mention that I am not particular about ticket class.

system: There are 3 flights matching your criteria, out of which I would recommend an American Airlines flight, with a layover, taking off at 2:55 pm. The return flight is at 12:45 pm and tickets are $599.

user: Sounds perfect to me.

system: Is there anything else I could do for you?

user: No, not at the moment. Thanks for everything.

system: My pleasure. Have a nice day.