Booking form multi lingual

I added custom form in single tour setting. I need this form in 2 languages. Problem is that shortcode used is not present in WPML string translation, It only shows strings/shortcodes used in page. Please help.

https://ibb.co/co7AK9
https://ibb.co/eyWFmp
https://ibb.co/c56gRp
https://ibb.co/h8L86p