You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: Myself Melissa Nelson.

ASSISTANT: Yes Melissa, how can I assist you today?

USER: I want to cancel my previous reservation. Can you please help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: OK.

ASSISTANT: Sorry, there is no reservation found on your name. Want to have any more information please?

USER: No thanks.

ASSISTANT: Thank you and have nice day.

USER: Thank you for your information.