Definition: In this task, you are given a Reddit post as a text. Your task is to generate a title for this text. The title should start with "TIFU by", followed by a situation that caused humor. The title should contain 7-12 words, ideally.
Input: Text: this fuck up started on thursday but i just found out today.

a little background, my friend, we'll call her m, has to go to las vegas for a work conference. she told me and a mutual friend/coworker that for some reason they booked her a hotel room with two beds and that it would be cool if someone could go with her. i had to decline at the time because of other plans. last week those plans got cancelled so i was freed up to go on the vegas trip. here's where the fuck up starts.

i asked her if she still wanted someone to come with her. she said that would be fun and that the rooms is paid for so all i would have to pay for is the ticket and food. i got her flight info so i could book the same flights. 

then i say "i'm about to buy a ticket, you're sure you want me to come?" she said yes. i buy my ticket and tell her i have booked a ticket for the same flight she's on.  then we had a brief conversation about how excited we are and that i've never been to las vegas.

today, our mutual friend is sick so i told her not to get me sick since i'm going to las vegas in less than two weeks with m. she thought i was joking because m hadn't said anything to her about it. i text m and ask if we're keeping it a secret. m said she didn't mention it because she thought i was joking about going. also she said i can't sleep in the second bed in her hotel room.

so now i have a non-refundable flight to las vegas and nowhere to stay.

TIFU by planning a trip to Las Vegas with a friend.