You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I'm Barbara Martinez. I want to cancel my recent reservation due to health issue, please help me with that.

ASSISTANT: Sure, please wait a moment I will check your reservation details and let you know.

USER: Sure.

ASSISTANT: Sorry to say, I did not find any reservation on your name.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us, have a pleasant day.