prompt: Are Greyhound bus tickets refundable?
chosen: Are Greyhound bus tickets refundable?
chosen: user
chosen: Greyhound bus tickets are not refundable, however, Greyhound customers can exchange their tickets for a full fare credit, less a $20 service charge, for up to one year from the original ticket purchase date.
chosen: assistant
rejected: Are Greyhound bus tickets refundable?
rejected: user
rejected: assistant