Training LUIS to recognise a job ticket number - microsoft-cognitive

Question

I'm trying to train LUIS to recognise a request for a status update on a job ticket (analogous to a JIRA/GitHub issue ID). The job ticket number will be of the format [Letter S or s][One or more digits]. E.g.:
"What is that status on S344?"
Intent: StatusUpdate
Entity: Ticket = S344
After labelling a number of utterances LUIS can recognise the intent with high confidence, but is never able to identify the Ticket entity, even when I use the exact ticket number I've labelled as the entity in a labelled utterance.
I've also tried adding a Regex feature [sS]{1}\d+, but that doesn't seem to make any difference.
Is there something special I need to do to make this work, or do I just need to persevere adding more training utterances?

Answer 1

I just tried this myself and after 7 utterances, LUIS is recognizing the ticket just fine. What I did was:
Send a couple of utterances
Train
Send a new bunch of utterances (different tickets number and phrases)
Train again
I exported my LUIS App for you (below and here)
{
"luis_schema_version": "1.3.0",
"name": "testticket",
"desc": "",
"culture": "en-us",
"intents": [
{
"name": "None"
},
{
"name": "StatusUpdate"
}
],
"entities": [
{
"name": "Ticket"
}
],
"composites": [],
"bing_entities": [],
"actions": [],
"model_features": [],
"regex_features": [],
"utterances": [
{
"text": "what is that status on s344?",
"intent": "StatusUpdate",
"entities": [
{
"entity": "Ticket",
"startPos": 5,
"endPos": 5
}
]
},
{
"text": "status of s124",
"intent": "StatusUpdate",
"entities": [
{
"entity": "Ticket",
"startPos": 2,
"endPos": 2
}
]
},
{
"text": "what's the status of s4",
"intent": "StatusUpdate",
"entities": []
},
{
"text": "please tell me the status of s4",
"intent": "StatusUpdate",
"entities": [
{
"entity": "Ticket",
"startPos": 6,
"endPos": 6
}
]
},
{
"text": "whats the status of s5",
"intent": "StatusUpdate",
"entities": [
{
"entity": "Ticket",
"startPos": 4,
"endPos": 4
}
]
},
{
"text": "whats the status of s9",
"intent": "StatusUpdate",
"entities": [
{
"entity": "Ticket",
"startPos": 4,
"endPos": 4
}
]
},
{
"text": "please tell me the status of s24",
"intent": "StatusUpdate",
"entities": [
{
"entity": "Ticket",
"startPos": 6,
"endPos": 6
}
]
}
]
}