Can you direct me to a Catalan restaurant that is moderately priced please?
Unfortunately, I do not happen to have anything serving catalan food that is moderately priced. Would you like me to check a different cuisine type or price range? 
yes how about a moderate mexican restaurant?
Sorry, but there are no mexican restaurants in the price range either. Would you like to try a different type of restaurant?
Italian would work just as good. 
Italian is a wonderful choice. There is a pizza express in centre, would you like to make a reservation?
No, but could you give me the phone number for Pizza Express?
The phone number is 01223324033.
I am also looking for a train going to Bishops Stortford that leaves after 15:30.
What day would you be traveling on? 
I need it for Friday an I'm departing from Cambridge
Okay I have a 17:30 that arrives at 18:07. would you like me to book that for you?
I'm not sure if I want to book yet or not, can you confirm the travel time for that one?
Of course. TR1567 leaves at 17:29 and arrives at 18:07.
Thanks that's all I need have a good day. 
Okay great, have a good day!