You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Ronald Rodriguez. I want to change my recent reservation, please help me with it.

ASSISTANT: Sure, please give me a minute.

USER: Sure.

ASSISTANT: There is no reservation found on your name in our data base.

USER: Its ok, I think it has been changed by  my friend.

ASSISTANT: Thanks for availing us.