You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my recent reservation due to my official leaves are cancelled. Can you help me for this one?

ASSISTANT: Sure, may I know your name to check with your details.

USER: Gary Thompson here.

ASSISTANT: Just a moment, let me check your reservation status in our records.

USER: Sure.

ASSISTANT: Sorry, there are no active reservation to cancel your ticket.

USER: No issues, thank you for the information,.

ASSISTANT: Thank you for reaching our service.