You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my recent reservation, due to some health issue. Can you help me?

ASSISTANT: Sure, may I know your name?

USER: Ok, I am Mary Hernandez.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no active reservations on your name to cancel.

USER: That's fine, no problem.

ASSISTANT: Thank you for reaching our service.

USER: Thank you for your information.