What is the logical operator for but? I saw a sentence like,
I am fine but he has flu.

Now I have to convert it into logical sentence using logical operators. I do not have any idea what should but be translated to. Please help me out. 
Thanks

An alternative way of conveying the same information would be to say "I am fine and he has flu.".
Often, the word but is used in English to mean and, especially when there is some contrast or conflict between the statements being combined. To determine the logical form of a statement you must think about what the statement means, rather than just translating word by word into symbols.
