Help with calling list from user input

[farispython]

A better way is to use a dictionary

database = {
    "phe": ["UUU", "UUC"],
    "leu": ["UUA", "UUG", "CUU", "CUC", "CUA", "CUG"],
    "ile": ["AUU", "AUC", "AUA"],
    ...
}

Then later in code

    aa = input(...).strip()
    print(database[aa])

database = {
    "phe": ["UUU", "UUC"],
    "leu": ["UUA", "UUG", "CUU", "CUC", "CUA", "CUG"],
    "ile": ["AUU", "AUC", "AUA"],
    "met": ["AUG"],
    "val": ["GUU", "GUC", "GUA", "GUG"],
    "ser": ["UCU", "UCC", "UCA", "UCG"],
    "pro": ["CCU", "CCC", "CCA", "CCG"],
    "thr": ["ACU", "ACC", "ACA", "ACG"],
    "ala": ["GCU", "GCC", "GCA", "GCG"],
    "tyr": ["UAU", "UAC"],
    "stop": ["UAA", "UAG", "UGA"],
    "his": ["CAU", "CAC"],
    "gln": ["CAA", "CAG"],
    "asn": ["AAU", "AAC"],
    "lys": ["AAA", "AAG"],
    "asp": ["GAU", "GAC"],
    "glu": ["GAA", "GAG"],
    "cys": ["UGU", "UGC"],
    "trp": ["UGG"],
    "arg": ["CGU", "CGC", "CGA", "CGG", "AGA", "AGG"],
    "ser": ["AGU", "AGC"],
    "gly": ["GGU", "GGC", "GGA", "GGG"],
}
print("Welcome to Amino Acid sequence Codon")
print()
while 1==1:
    aa = input("please enter the 3 letter amino acid to view the codon: ").strip()
    print(database[aa])
    if aa not in database:
        continue
    quit = input("Quit: y/n? ")
    if quit == "y":
        break
    if quit == "n":
        continue
    else:
        print("error")
        break

I got error when I input the wrong value for example "sea". Here is the error:

Error:
Traceback (most recent call last):
  File "C:/Users/faris/PycharmProjects/Beginner projects/AA Codon dictionary.py", line 29, in <module>
    print(database[aa])
KeyError: 'sea'

Can I make it to repeat the input when the value is not in the dictionary, instead of being error?