You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I aid you?

USER: I want to cancel my recent reservation in the name of Sandra Miller. Can you help me in this?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: It's ok, not an issue. Thank you for your information.

ASSISTANT: Thanks for approaching us.