You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Jeffrey Hernandez. I want to cancel my reservation, can you help me?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no active reservation found on your name in our data base to cancel.

USER: That's fine. Anyway, thank you for your help.

ASSISTANT: Thank you for contacting us.