Welcome to RS. Please understand that man on the photo is not the man on the other side of the screen. The photo is stolen by West African group of young men, who never went to Buffalo NY but sit in dirty internet cafe somewhere in Nigeria or Ghana and defraud thousands of innocent victims of hard earned money....
The only true he told you it the true that he is in Nigeria. There is not any daughter named Hannah, but if he will keep in touch with you he will put a youngest scammer on the phone who will be playing role of Hannah. It happened in my scam too- except I was speaking with 6 yo boy.
Scammers often bring children from the streets who will be used in scam for a food and drink, they also use the youngest scammers with highest voice or voice changing headphones...