Identify the conjunction in the sentence: "I wanted to go, but I was too tired."

In the given sentence, "I wanted to go, but I was too tired," the word "but" serves as a conjunction. Conjunctions are words that connect clauses, phrases, or words within a sentence. In this case, "but" connects two independent clauses: "I wanted to go" and "I was too tired." It indicates a contrast between the two ideas, suggesting that despite the desire to go, the speaker's tiredness prevented them from doing so. This use of "but" is essential in illustrating the relationship between the two statements. The other words in the sentence serve different grammatical functions; "wanted" is a verb, "go" is also a verb, and "tired" is an adjective, which reflects their roles distinct from that of the conjunction.