He did it to show the difference in their status and education.
Iambic pentameter is an elevated style, and Shakespeare created noble and educated characters who spoke in it. On the other hand, there were commoners who obviously did not belong to the same class as the nobles and did not receive the same education (if they had any education to begin with) so he wanted to show those differences through their speech. Nobles spoke in iambic pentameters, and commoners in blank verse or prose.
Answer:
to show that being from New York disrupts the author's relationships with the people he meets
Explanation:
According to the conversation from the excerpt of Travels with Charley, it is narrated that the speaker is treated differently by the people he met on his travels.
First, it is stated that there were interests and questions about "twenty or thirty times" during his trip and also questions from locals who asked him questions.
The purpose of the conversation is to show that being from New York disrupts the author's relationships with the people he meets
It means bizarre or crazy. Hope this helped!