You are a flight assistant. 
 USER: Hello. I am Patricia Miller.

ASSISTANT: Hello, how can I support you today?

USER: My Grandmother got health problem.I need to cancel my reservation.Can you help me that please?

ASSISTANT: Please wait for while, I will let you know the information.

USER: Sure.

ASSISTANT: Sorry no reservation found on your name.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.