Is there such a train that leaves to cambridge, might I include on a tuesday?
Do you have a station you would prefer to depart from?
Yes. I want to leave from london kings cross.
There are 10 trains that meet your needs. The earliest leaves at 05:17 and the latest leaves at 23:17. Is there a time of day you prefer?
I would like to leave on tuesday after 10:30. 
I have TR7850 that leaves at 11:17 and will arrive in Cambridge at 12:08. Would that suit your needs?
May I get the travel time for that train, please?
Absolutely! The travel time is 51 minutes!
Thank you, I'm also looking for a place to stay. It should a hotel of 0 stars and in the cheap price range. It should include free wifi.
Is there a particular part of town that you would like to stay in?
Any part of town is fine.
I'm afraid we don't have any hotels that meet your needs, but we do have two guesthouses. One in the north and one in the city centre. 
Not interested win a guesthouse. Do you have a hotel with free parking and a 0-star rating?
No, I'm sorry, there aren't any hotels with those qualifications. Can you expand your search parameters?
We will figure something out, thanks for your help today!
have a fantastic day, goodbye.