Yes, I had a few. Usually she waits a few minutes, trying to make eye-contact with me and then she tells me to breathe. She keeps repeating: "I'm here, it's ok" That usually helps. Or some guided meditation.
On a side note: I hate when I have a panic attack and someone tells me in soothing reassuring voice "You're ok, you're safe.". As soothing as they think it may be - it's really not - for me at least! I had a therapist who would always word it like that and I wanted to punch her! I wasn't ok, I wasn't safe so telling me that I was was like a joke..But that's only me..