How To Parse the Output of the Command

Hi there!

Here is my scenario:

1. Command Prompt application returns the output which contains several lines.
   C:>MyCommand parameter1
   
   The output is:
   User1 has a balance of 10.00
   User1 has a free quota of 0.00
    
2. We need
   1. To get only the first line of output, i.e. "User1 has a balance of 10.00"
   2. Separate each word with commas (or tabs), substitute the spaces with designated characters like:
      User1,has,a,balance,of,10.00

Would you be so kind to implement that script. I tried to deal with export-csv command, but it did not work out :(

Thank you very much for your time and attention!