hi, ブンフイ san (^_^
A: what do you want to be (in the future), Telesa ?
B: i want to be a doctor.
the verb, 'naru' means, 'turn', 'become', or, if you find 'naru' without 'tai, 'sound', or 'produce (some fruit)'
and 'tai' means 'would like to', or 'hope to'
cute cat, isn't it? (^_^