Represent the dialog for retrieving similar scenarios Speaker2: Nethan still doesn't speak 
Speaker1: How old is he you said?
Speaker2: 12 and half months 
Speaker2:  It worries me
Speaker1: But he speaks some simple words, right?
Speaker2: Yes. For example...like "mama" or "daddy"or"hungry"
Speaker1: Then do not worry too much
Speaker1: Most of my friends said their kids started to talk around 16 months 
Speaker1: And suddenly talk so much 18 to 19 months and reach at pean between 22 and 24 months
Speaker1: peak*
Speaker2: Isn't there good way to make this period earlier?
Speaker1: There were 2 ways that actually helped my son speaking faster
Speaker2: What were they?
Speaker1: Try to answer him back with longer sentence
Speaker1: For example, when he says "mama"
Speaker1: Then "mama, thank you" like this
Speaker1: Or sing his favourite song together
Speaker2: How about reading the book together?
Speaker1: That was the 2nd method I used.
Speaker1: Try it. 
Speaker1: And don't worry!
Represent the dialog scenario for retrieval Speaker2 worries that her son does not speak at the age of over 12 months. According to Speaker1, she shouldn't worry, and she can try different language development methods.
Represent the dialog scenario for retrieval Speaker2 did 20 or 30 so far, 3-4 per day, 40 or 35 hours, so the same as Speaker1.