import re
text = 'one two three 10 number eleven eighteen ninety  \n Possible to reserve French Laundry on 25th Dec at 6pm for 4 of us? '
numbers = r"""(?x)
			(
			  ^a(?=\s)|
			  \d+|
			  \b
			  (?:
			      one|two|three|four|five|six|seven|eight|nine|ten| 
			      eleven|twelve|thirteen|fourteen|fifteen|sixteen|seventeen| 
			      eighteen|nineteen|twenty|thirty|forty|fifty|sixty|seventy|eighty| 
			      ninety|hundred|thousand
			  )
			  \b
)"""
 
print(re.findall(numbers, text))

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