You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I'm Andrew Gonzalez here. I want to cancel my recently done reservation, because of postpone of my business meeting.

ASSISTANT: Ok.

USER: Can you please help in that?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: There are no active flights available with your details, Andrew. Thank you for reaching us.

USER: That's fine. Thank you for your information.