You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My name is David Martinez and I want to cancel my recently done reservation . Can you please help?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no active reservation on your given name.

USER: No problem, thank you for information.

ASSISTANT: Thank you for opting us.