Luggage tag

A check in desk prints a paper tag for every bag it takes. The tag carries the passenger's name, the flight, and the weight of the bag, all on one line, and the machine that prints it calls your function once per bag.

Write luggage_tag. Return the passenger, a space, a slash, a space, the flight, the same separator again, then the weight with exactly one digit after the decimal point, a space, and the letters kg.

Worked example

Input:  passenger = "Ada Lovelace"
        flight    = "BA117"
        kilos     = 23.5

Output: "Ada Lovelace / BA117 / 23.5 kg"

Input:  passenger = "Jo Park", flight = "LH99", kilos = 7
Output: "Jo Park / LH99 / 7.0 kg"

Constraints

• passenger is between 0 and 60 characters long, and may contain spaces.
• flight is between 1 and 10 characters long.
• kilos is between 0 and 200, and may have a fractional part.
• The weight always shows exactly one digit after the point, so 7 becomes 7.0 and 0 becomes 0.0.
• If the passenger name is empty, the line still starts with the separator: " / XX0 / 0.0 kg".