U: I would like a cheap restaurant.

S: There are ten cheap restaurants in the city; do you have a preference of area or type of cuisine?

U: I don't care.

S: Ask is a nice place, that is in the cheap price range. Is there anything else I can help you with?

U: Do they have friendly and responsive staff members?
S: It seems that the staff quality can vary from night to night, unfortunately. Would you like me to find another option?