# define a custom function
def user_description(user_dict):
    """
        Function to return a sentence (string) describing input user
    """
    return f'{user_dict["Name"]} is {user_dict["Age"]} years old and is interested in {user_dict["Interests"][0]}.'

# print user description
description = user_description(user_dict)
print(description)

# print description for a new user!
new_user_dict = {"Name":"Ify", "Age":27, "Interests":["Marketing", "YouTube", "Shopping"]}
print(user_description(new_user_dict))