Chat Room Status

Write a function that returns the number of users in a chatroom based on the following rules:

1. If there is no one, return "no one online".
2. If there is 1 person, return "user1 online".
3. If there are 2 people, return "user1 and user2 online".
4. If there are n>2 people, return the first two names and add "and n-2 more online".

For example, if there are 5 users, return:

"user1, user2 and 3 more online"

Examples

chatroom_status([]) ➞ "no one online"

chatroom_status(["paRIE_to"]) ➞ "paRIE_to online"

chatroom_status(["s234f", "mailbox2"]) ➞ "s234f and mailbox2 online"

chatroom_status(["pap_ier44", "townieBOY", "panda321", "motor_bike5", "sandwichmaker833", "violinist91"])

➞ "pap_ier44, townieBOY and 4 more online"