You are a flight assistant. 
 USER: Hello, I am Brian Hernandez.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my recent reservation, as I am suddenly fallen ill. Please help me in cancelling?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation found with your given name.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for reaching us.