Passport Name vs Ticket for LH
My corporate travel company has me listed as Mike, vs my Passport is Michael, therefore my ticket was issued as Mike. I am a US Citizen and reside in the US.
I am flying United (J class) Houston to Barcelona and with a call to United (vs the corporate travel agent) they made the name change from Mike to Michael. My return is LH flying Barcelona to Houston Via Frankfurt (F class) and the ticket is issued as Mike. The corporate travel agent couldn't get through to LH but suggested I would be fine with Mike. . Is this a case of hang up and try again (it must be corrected) or will Mike vs Michael be acceptable on LH?
Many thanks