I have used regex pattern in this nlu.yml file for recognising any name which user types but this is not recognising can u please provide solution for this problem

version: $"3\mathrm{.}1"$

nlu:

$-$ intent: ask$\_$room$\_$prices

examples: $|$

$-$ What are the room prices?

$-$ Can you show me the prices of rooms?

$-$ How much does each room cost?

$-$ Tell me the room rates

$-$ intent: greet$\_$with$\_$name

examples: $|$

$-$ My name is $[$John$]($person$\_$name$)$

$-$ I am $[$Alice$]($person$\_$name$)$

$-$ Call me $[$Bob$]($person$\_$name$)$

$-$ You can call me $[$Charlie$]($person$\_$name$)$

$-$ I$\text{'}$m $[$David$]($person$\_$name$)$

$-$ intent: greet

examples: $|$

$-$ Hi

$-$ intent: room$\_$type

examples: $|$

$-$ I need a $[$Single$]($room$\_$type$\_$name$)$

$-$ I need a $[$Double$]($room$\_$type$\_$name$)$

$-$ I need a $[$Suite$]($room$\_$type$\_$name$)$

$-$ intent: checkin$\_$date

examples: $|$

$-[$Single$]($room$\_$type$\_$name$)$

$-$ I need a $[$Double$]($room$\_$type$\_$name$)$

$-$ I need a $[$Suite$]($room$\_$type$\_$name$)$

$-$ regex: person$\_$name

examples: $|$

$-^[$A$-$Z$][$a$-$z$]+(?$: $[$A$-$Z$][$a$-$z$]+)*$$