You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Betty Hall.

ASSISTANT: What help do you need from our travel agency?

USER: I would like to cancel my recent reservation, can you help me with this?

ASSISTANT: Sure, I am gleeful to help you with the ticket cancellation.

USER: Thanks for your quick response.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no active reservation found with your name in the confirmation chart list to cancel your ticket.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for choosing our agency.