Definition: In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.
Input: Sentence 1: On Sunday I will be leaving on a trip. Sentence 2: I'm excited to visit the Southwest, even though it is blazing hot! Sentence 3: I'll be in a big city for a few days. Sentence 4: For the last part of my trip, I will go up into the mountains. Sentence 5: It will be much cooler and I will attend an outdoor concert. Choices: a. Travel Time. b. Johann Buys A Phone.

a