Here is the list of Alphabet and how can we express during the insurance eligibility verificaton or any other calling process.
A for Alfa
B for Bravo
C for Charlie
D for Delta
E for Echo
F for Fox
G for Golf
H for Hotel
I for India
J for Juliet
K for Kilo
L for Lima
M for Mike
N for November
O for Oscar
P for Papa
Q for Quebec
R for Romeo
S for Sierra
T for Tango
U for Uniform
V for Victor
W for Whisky
X for X-ray
Y for Yankee
Z for Zulu