Hello with input in NASM assembly for x86-64 linux with the common ABI

hello-input.s

; Build:
; ~$ nasm -felf64 hello-input.s -o hello-input.o
; ~$ ld hello-input.o
; ~$ ./a.out

global _start

section .data
        null:           equ     0x0
        stdoutf:        equ     null
        stdinf:         equ     0x1
        newline:        equ     0xA
        namelen:        equ     0xF

        prompt:         db      'What is your name: ', null
        promptlen:      equ     $-prompt
        greet:          db      'Hello, ', null
        greetlen:       equ     $-greet

section .bss
        name:           resb    namelen

section .text
        _start:
                ; write prompt to stdout
                mov     rax,    0x1             ; rax = write (0x1)
                mov     rdi,    stdoutf         ; rdi = stdout (0x0)
                lea     rsi,    prompt          ; rsi = *prompt
                mov     rdx,    promptlen       ; rdx = promptlen
                syscall                         ; write(stdout, prompt, promptlen)

                ; read into name
                mov     rax,    0x0             ; rax = read (0x0)
                mov     rdi,    stdinf          ; rdi = stdin (0x1)
                lea     rsi,    name            ; rsi = *name
                mov     rdx,    namelen         ; rdx = namelen (0xF)
                syscall                         ; read(stdin, name, namelen)

                ; write greeting
                mov     rax,    0x1             ; rax = write (0x1)
                mov     rdi,    stdoutf         ; rdi = stdout (0x0)
                lea     rsi,    greet           ; rsi = *greet
                mov     rdx,    greetlen        ; rdx = greetlen
                syscall                         ; write(stdout, greet, greetlen)

                ; print name
                mov     rax,    0x1             ; rax = write (0x1)
                mov     rdi,    stdoutf         ; rdi = stdout (0x0)
                lea     rsi,    name            ; rsi = *name
                mov     rdx,    namelen         ; rdx = namelen (0xF)
                syscall                         ; write(stdout, name, namelen)

                ; exit
                mov     rax,    0x3C            ; rax = exit (0x3C)
                mov     rdi,    0x0             ; rdi = 0x0
                syscall                         ; exit(0)