You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my reservation, due to some health issue.

ASSISTANT: Sure, I am here to help you. Can you help me with your name?

USER: Sure, I am Catherine Gonzalez.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, Thank you.

ASSISTANT: Thank you for picking us.