Workflow didn’t send email to Assigned To filed

Hi all,

I’m so quite new with Workflow and currently I used SPD 2010.

I set a workflow like this (please see the attachment file). When Requestor submit ticket, the ticket will send to Assigned To for approval. If this ticket had been approved, workflow will send notification to both of Assigned To and Requestor. But I don’t know why workflow did not worked. It was not send email, I mean.

I was set Permission for all member is: Full Control, Design, Contribute, Read, Records Center Web Service Submitters.

Please help me. Appreciate in advance

Nguyen, Van Diep

Edit for attachment file