If I am only able to make single prompt agent on retell ai and I know how to book meeting how to check availability can i sell this its enough? please answer me

recently i watch your tutorial on youtube it was very amazing it was about checking availability and book appointment in n8n and retell i request make another tutorial for cold calls same in n8n and retell complete process from starting to making a cold call booking meetings on colander to sell our service i hope you will make tutorial on it waiting for your next vido