The English Restaurant

I've played a lot of Perplexity games over the years (well, I can remember 2 or 3). But something seems to have gone wrong with the programming. It's designed to accept full sentences, but even really basic stuff isn't understood. My start was like this:


You’re going to a restaurant with your son, Johnny, who is vegetarian and too scared to order by himself. Get a table and buy lunch for both of you. You have 20 dollars in cash.
Host: Hello! How can I help you today?
?:hello! I would like a table for two
Hello!
Host: Perfect! Please come right this way. The host shows you to a wooden table with a checkered tablecloth. A minute goes by, then your waiter arrives.
Waiter: Hi there!
Waiter: What can I get you?
?:hello! let me order for my son
Hello!
I don't know the words: let and I don't know the way you used: order
Waiter: What can I get you?
?:let me ask my son
I don't know the words: let, ask
Waiter: What can I get you?
?:johnny, what would you like to eat?
I don't know the words: johnny,
Waiter: What can I get you?
?:i would like a hamburger
I don't know the words: hamburger
Waiter: What can I get you?


I got through the whole game, but the whole thing was like this. The most basic words related to restaurants weren't understood:


?:i eat the food
I don't know the words: eat
Waiter: What can I get you?


I know the Perplexity engine is capable of some sophisticated worldbuilding, so I really don't know what happened here.

It's designed to allow you to practice English, it says. I'm a native English speaker and tried to type reasonable responses to the questions/situation.

Sometimes it took more than 30 seconds to respond before the game replied that it didn't understand what I was saying. Frequently it said "unrecognized word," which makes sense for a traditional parser game, but it makes no sense for a game where someone's supposed to practice their English.