The new social media tool can answer questions about bus arrivals, bus routes, service updates on the Tube, TfL Rail, London Overground, DLR and London Trams.
The bot, which was created in-house by TfL, can also provide Tube, Night Tube and rail maps as well as refer customers to a customer service agent.
It incorporates machine-learning, growing more precise as more people use it.
TfL plans to explore the possibility of further features in the future including providing journey-planning information and status alerts.
"Millions of people already use our Journey Planner and social media channels to help them get around London, and we are constantly seeking new ways to make the process even easier," Shashi Verma, TfL’s director of customer experience, said. "This TravelBot will make it simpler for people using Messenger to get the information they need as they move around the city. We think that this initial version will be a major step forward in how we provide travel information to our customers and we look forward to their feedback to help us improve the product over time."
To access the TfL TravelBot, search for ‘TfL TravelBot’ on Facebook or visit facebook.com/tfltravelbot/ on a desktop computer.