This is the dialogue and ending (just edited it once):
"Excuse me," he said, after gathering some courage.
She widen her eyes as if she had just woken up from a trance, turned her head and stared at him with confused eyes.
"Do you mind if I sit closer?" he asked.
She shook her head slowly.
He moved closer, still keeping a distance.
"I'm Jun," he said, and paused. "Can I know your name?"
She kept silent for a moment, looking down at her hands.
"Lin," she said with a low voice.
They spent the next minutes looking at the decayed tree without saying anything else. Jun wasn't sure if it was his imagination or the fog, but the tree seemed to have become taller.
"Sorry for asking this," he said, after a moment. "But is it true that you don't have a soul?"
She took a sip of her canned Asahi cocktail and then nodded.
Jun stared at her blankly as if she were a ghost.
"How did that happen? he asked, "Did you lost it somewhere?"
Lin shook her head. "I was born without one."
He felt more confused than before. "I thought people couldn't live without a soul."
"For me, having a brain and body is enough," she replied.
Jun stared to his can, thinking what she had just said.
"It seems like you spend most of your time alone."
Lin narrowed her eyes and looked up the dark sky.
"Not many people want to get close to me once they discover that I don't have a soul," she said. "Some get scared, others get hostile."
"Why is that?"
"I wish I knew," she replied.
Jun finished his beer and pulled another one from his bag.
"You know," he said, holding the can. "Maybe you remind them about something they fear. Something they fear deep inside."
She glanced at him without figuring out what he meant.
"Well," Jun said. "The good thing is that you have plenty of time to do whatever you want."
"I don't do much," she said. "I spend most of my time sitting here, watching the dead tree."
"Is there something special about it?"
"One day he spoke to me," Lin said and sipped her cocktail. "He told me something that has been revolving in my mind for a while."
Jun remained silent, waiting for her to continue.
"He said that people want to be eternal as an individual because they forgot how to be eternal as a whole with nature."
"What does that mean?" Jun asked.
"Honestly, I'm not very sure."
He sipped his beer and looked up. The sky had a majestic purple hue. He couldn't believe they had talked the whole night.
"He also told me what will happen to me after I die," Lin said after a moment.
Jun stared at her with his lips slightly parted.
"He said that after I die, my body will decompose and return to the earth, nourish all sort of living things, and part me will continue living on them."
"It doesn't sound that bad," he said with a smile.
She smiled at back at him. It was his first time seeing her smile.
"Thank you. It's been a long time since someone listened to me the way you did," she said.
Before this dialogue, the main character talks to a classmate on the phone (So there is a little dialogue in the middle of the story).
I'm not very sure if doing this makes the story look unbalanced or poorly written. If it does, what can I do to improve it?
(I would also like to know how to improve the flow and identify inconsistencies in the story).