AWS Lambda Service Naming using Regex

[prabhavathi]

Can anyone help me with this issue, I am trying to change AWS Lambda service function name as below, 

My actual requirement: Removing random text inbetween the service name

lambda-naming-test-FlightTailFunctionV2-ZQRUSx5pucrm in ap-southeast-2 

lambda-naming-test-FlightTailFunctionV2 in ap-southeast-2

But I can get like this with Regex Format : {Service:DetectedName/^(.+?)-[A-Za-z0-9]+ in .*}

lambda-naming-test-FlightTailFunctionV2-ZQRUSx5pucrm in ap-southeast-2 

lambda-naming-test-FlightTailFunctionV2

Can anyone suggest me better Regex format to remove random text inbetween the service name?