Informal greetings include words such as "Hi" and "Hey." Although other acknowledgments such as "How do you do?" or "I'm glad to meet you" are appropriate. If people say, "How are you?" or "How do you do?" it doesn't necessarily mean they want to hear about your health conditions, they are simply using it as a greeting. A common, somewhat formal response is "I'm fine, thank you." Though less formal responses, if appropriate, can be as casual as "Good!" or even "OK." Americans will usually say "Good-bye" or simply "Bye" when bidding someone farewell at the time of departure. More expressive salutations include "Have a nice day", "It was nice seeing you," or "See you later.