You are a flight assistant. 
 USER: Hi. I am Samantha Hernandez.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I want to cancel my recent ticket booking due to office work that my manager did not approve my leaves, so can you please cancel it?

ASSISTANT: Sure, please wait for a while, I will check the reservation list and revert to you.

USER: Ok.

ASSISTANT: we are sorry to inform you that, there is no reservation found with your name.

USER: No issue.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thank you.