about: show list of trips

return list of trips that user joined

Content-Type: application/json

//json body
	[
	{
	trip_id:number[int],
	title:string[varhcar],
	joined_people:number[int],
	total_copied:number[int],
	start_date:string[date],
	end_date:string[date],
	poster_image_link:string,
	planning_status:boolean
	}
	...
	]