Need help location language file

I would like to change this info on the booking page but I can't locate the file. I also tried overrides:

Individual Registration
Please enter information in the form below to process registration for event

Hello

1. For Individual Registration , go to Events Booking -> Translation, find the text and change it

2. For Please enter information in the form below to process registration for event text, go to Events Booking -> Emails & Messages, find the message and change it

Regards,

Tuan