Task: Find a hotel for two adults and one child since I intend to travel to London with my family from October 30 to November 10. 
Steps:
Open the booking.com app
Tap on the destination search bar
Search the destination to london
Select the first search result
Tap on the date search bar
Select the check in date to 30th October
Tap in the check out date as 10th november
Tap on the select dates button at the bottom of the scree
Tap on the adult and children section
Increase the adult by 1
increase the children by 1
Tap on the select children age option
Select the children age 1 year old
Tap on the ok option
Tap on the apply button at the bottom of the screen
Click on the search button