I'm not sure how to complete this task! Anyone have an idea? Any advice would be appreciated!

# Task 1 of 4
# Create a variable named 'full_name' that holds your full name.
# Make another variable named 'name_list' that holds your full
# name in list form, split on the spaces. Don't create name_list
# manually, use split!
full_name = "Chris Freeman"
name_list = full_name.split()

# Task 2 of 4
# Create a variable named 'greeting_list' that uses the string
# "Hi, I'm Treehouse" to create a list by splitting on the spaces.
greeting_list = "Hi, I'm Treehouse".split()

# Task 3 of 4
# Almost done! Now, replace the value of "Treehouse" in
# greeting_list with the first item in your name_list variable.
greeting_list[2] = name_list[0]

# Task 4 of 4
# Great! Finally, make a variable named 'greeting' where you join
# 'greeting_list' back into a string, separated by spaces. You
# should end up with "Hi, I'm **<your first name>**" as the value
# of greeting.
greeting = ' '.join(greeting_list)