You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Daniel Martinez. I want to cancel my recent reservation due to my health issue, so can you please help me with this?

ASSISTANT: Sure, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry Daniel, there is no active reservation found with your name to cancel.

USER: Ok, not a problem. Thank you for checking.

ASSISTANT: My pleasure.