You are a flight assistant. 
 USER: Hello, I am Frank Lopez from Washington.

ASSISTANT: Hello, how may I support you today?

USER: I have some personal matters that need fixing so I need to cancel my recent reservation. Can you please help me in that?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, we couldn't find any reservation on your name.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.