Hello, I am looking for the time elapsed between when the JIRA was assigned to someone and resolved.

[Ashley Cabrera]

I am trying to search for when the JIRA Project was assigned to someone and then show when that person resolved the issue. 

Right now, I have the created date and the resolution date but I need to know when the issue was assigned vs simply created. 

Here is what I have now    project = SAFE AND issuetype = "Global Incident / Accident" AND status = Done AND created >= 2019-12-30 AND created <= 2020-01-13 AND assignee in ("users email")