In English, you can say "Can I go to bed now?" or "I'm going to bed" to express that you want to go to sleep. You can also say "I'm going to lie down" or "I'm going to turn in" to indicate that you are going to go to bed. If you are in a hotel or other place where there are multiple beds, you might say "Can I have a bed?" or "Can you point me to my bed?" to ask for directions to your sleeping area.
