You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I had booked a ticket to Denver in my weekend, but due to money problem, I am unable to travel there. Can you cancel my ticket?

ASSISTANT: Sure, can I know your name?

USER: The ticket is reserved on Ryan Perez name previously.

ASSISTANT: Sorry Ryan, there is no reservation found with your name in our records.

USER: It's ok, no problem. Anyways, thank you for your help.

ASSISTANT: You are most welcome.