need a train leaving on thursday after 14:30
user
i found 195 trains that match your prerequisites . what is your destination ?
assistant
i am going to london liverpool street from cambridge .
user
train tr3237 arrives at 17:27 and cost 16.60 pounds . would you like me to book it ?
assistant
no thanks , i am not sure how many seats i'll be needing yet .
user
okay . just call us back when you do .
assistant
oh , i am also looking for an african restaurant in the centre . . north african , to be exact .
user
there are not any in that particular area , do you have any alternative preferences ?
assistant
hmm , can you see if there might be an expensive restaurant that serves specifically north african food in the centre of town ?
user
i apologize , but we are do not have any north african restaurant -s in this town at all . i do have an expensive african restaurant in the centre . will that suffice ?
assistant
no , if i cannot get north african i would really prefer something radically different . chinese , maybe ?
user
how about the ugly duckling ? they serve chinese food and are located in the centre of the city .
assistant
okay . can you book me a table for 7 at 11:00 for thursday ?