ifelse, is.na and replace

I have a big data frame where I am trying to figure out with NA values

q3	times_30
Very easy	18/11/2021
Easy	01/01/2021
NA	Not due
NA	No answer
NA	01/02/2021

I am using

df$q3<-ifelse (is.na(df$q3), df$times_30,df$q3)

Where gives me

q3	times_30
Very easy	18/11/2021
Easy	01/01/2021
Not due	Not due
No answer	No answer
01/02/2021	01/02/2021

but I would like instead of replaced with the date at the NA of q3 to give me a "No answer", as the following

q3	times_30
Very easy	18/11/2021
Easy	01/01/2021
Not due	Not due
No answer	No answer
No answer	01/02/2021