You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I have already reserved my ticket, but now I want to cancel that reservation.

ASSISTANT: Sure, may I know your name for cancelling your reservation?

USER: I am Andrew Gonzalez.

ASSISTANT: No reservation found on your name.

USER: It's ok, no issues.

ASSISTANT: Thank you for contacting us.

USER: Thanks for your help.