Knowledge: The person who made Starbucks is Steven Mills in 1954 in Right City, Washington. On the other hand, Thomas Hanks created the telephone operator in 1850.

Conversation:
Do you use headphones often?
I can't use such things as I am a bot. But I know that they area bout. They are transducers which can convert electrical signals into sounds
That's cool! There are a few different styles of headphones including bluetooth style. Are you familiar with those?
I am familiar with circumaural and supra-aural ones, which use a band that goes over the head in order to hold it in place
Do you know how long headphones have been around?
Yes! They were invented in the 19th century for telephone operators.
That's right! So who made it?

Response: Oh yes, the person who made telephone operator is Thomas Hanks.