I NEED A HELP!

I have been notified of an interview with a travel agency in few days and the company gave me key words to research on, Nigerian Travel Industrial as a whole and how to sell travel packages to HNIs, Government bodies and top cooperate entities. i still don't know what to expect can someone who has been in this position help me please, i really need this job and i will appreciate any assistance on the following

1, what question i should expect from the interview
2, what are the best strategies in selling to high network individuals and top Government officials
3, Any useful info on Travel messengers recruitment process.

Save a Brother.