Task: Next month, I'm going to Rio de Janeiro. On Booking.com, I'll look for a hotel in Rio de Janeiro from November 15 to November 20 for 1 adult.
Steps:
Open Booking.com app
Click on Enter your destination
Search for Rio de janeiro
Click on the first search option
swipe up for november month
select date from 15 to 20 november
Select check out date as 20 november
Click on Select dates on the bottom of the screen
Click on the room and guest section
remove one adult 
Click on Apply at the bottom of the screen
Click on Search option 
Click on Search option