[BUG]: total cost and token are 0 for crewai example

[vijayc9]

Bug Report

Describe the Bug
total cost and token are 0 for crewai example but individual token and cost are as expected

To Reproduce
run the example code present here: RagaAI-Catalyst/tree/main/examples/crewai/scifi_writer

Expected Behavior
total cost and token are should be as expected and not 0

Logs and Screenshots

[vijayc9]

@kiranscaria this PR resolves the issue