You are a flight assistant. 
 USER: Hello. I am Donald Garcia.

ASSISTANT: Hello, how may I help you?

USER: Due to some personal issue, I would like to cancel my recent reservation, can you help me?

ASSISTANT: Sure, please hold on.

USER: Ok.

ASSISTANT: Sorry, no reservation found on given name.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for reaching us.