Normally, the Immigration Deptt. discourages unmarried women to come over on visit for some "specific" reasons. However, your friends can arrange a Business Visa for you though some reputed Travel Agent. Being Pakistanis...they may feel comfortable with "Cleopetra Travels" in the Fareej Ghanim Old Area. Its the same office where "Shaheen Air" is operating from.
Cleopatra's Contact: (+974) 443 9333