Given name in my passport is "<FirstName> <LastName>"

[mayankneedshelp]

Given name in my passport is "<FirstName> <LastName>", but Surname has been kept blank, but in my H1B Stamped Visa it is mentioned as First Name: <FirstName> and Last Name: <LastName>, do i need to worry about anything in US or they accept the names as in the Stamped Visa for everything?
my other documents also has the same convention as of the stamped Visa. i.e. First Name: <FirstName> and Last Name: <LastName>
What name should I Keep on the Tickets?

Please help.