Fetch variables from email body using Flow Designer

Hi All,

I have email body like below from incoming mail to servicenow

Hi Team,

Please use below details to create an Hr case

Requester Name: Test11

Request ID: 12343

I want to get this requester Name and put it in a description.

I know this can be done like "email.body.requester_name" if we use inbound email action but i want this to be fetched using flow designer if we have some 40-50 such fields.

Can anyone help me on this.