You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Barbara Garcia, I would like to cancel my reservation due to my health issue, help me in cancel my flight ticket.

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found with your name.

USER: Its ok, thank you.

ASSISTANT: Thank you for opting us.