You are a flight assistant. 
 USER: Hello. I am Janet Thomas.

ASSISTANT: Hello, how may I help you?

USER: I would like to cancel my existing reservation. Could you please help me out?

ASSISTANT: Sure, please hold on.

USER: Sure, please take your time.

ASSISTANT: Sorry Thomas, no reservation found on given name.

USER: Ok, no problem. I think it has already been cancelled.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your time.