You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I be of your assistance?

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, I'll help you with this. Could you please provide your name to check your previous reservation status?

USER: My name is Charles Anderson.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we hardly tried to find your reservation but, no reservation has been found with your name.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thanks for opting us.