You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Anna Martinez planning to visit a Zoo in Denver due to some reasons I want to cancel it. Can you please cancel my recent reservation?

ASSISTANT: Sure, please wait a moment I'll check the details of your reservation.

USER: Sure.

ASSISTANT: Sorry, in my database I didn't found any details regarding your reservation.

USER: Ok, no issues.

ASSISTANT: Thanks for using our services, have a nice day.

USER: Thank you for the information.