the ticket is $2000.

On Saturday I asked the agent to book the ticket and brought a check to the agent's bank. The agent said he would issue the ticket on Monday.
For some reason, I need to cancel the order. I called the agent on Sunday (no one works on Sunday so I left a message) and placed stop payment on the check.
On Monday, I called agent first thing in the morning (at 8:30am), and the agent said the tikcet is already booked.