What tactics would you use to persuade a difficult client?

Thanks 

You need to prove him something!  

1. Greet him accordingly.

2. Listen carefully to the customer without being angry.

3. Build rapport with the customer using acceptable humour.

4. Empathise the customer using low tone of voice.

5. Concentrate on the job requirements and serve the customer according without taking things too personal.

6. Thank the customer for having business with you.

I will start by quickly analyzing and readin his personality, if hes the type who likes to talk than I will yeast, other than that I shall lead the conversation 

There are mutiple, starting from negotiating